Home / 258,810,284,990.40-388,215,427,485.60-217,016,064,139.20

Finding the Fourth Proportional to 258,810,284,990.40, 388,215,427,485.60 and 217,016,064,139.20

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Solution

The fourth proportional to 258,810,284,990.40, 388,215,427,485.60 and 217,016,064,139.20 is: 325,524,096,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,810,284,990.40 : 388,215,427,485.60 = 217,016,064,139.20 : x
  2. Step 2: Convert to fraction form
    258,810,284,990.40/388,215,427,485.60 = 217,016,064,139.20/x
  3. Step 3: Cross multiply
    258,810,284,990.40x = 388,215,427,485.60 × 217,016,064,139.20
  4. Step 4: Simplify right side
    258,810,284,990.40x = 84,248,984,111,041,910,669,312
  5. Step 5: Solve for x
    x = 84,248,984,111,041,910,669,312/258,810,284,990.40
  6. Step 6: Final answer
    x = 325,524,096,208.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.