Home / 259,331.60-388,997.40-72,343.10

Finding the Fourth Proportional to 259,331.60, 388,997.40 and 72,343.10

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Solution

The fourth proportional to 259,331.60, 388,997.40 and 72,343.10 is: 108,514.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,331.60 : 388,997.40 = 72,343.10 : x
  2. Step 2: Convert to fraction form
    259,331.60/388,997.40 = 72,343.10/x
  3. Step 3: Cross multiply
    259,331.60x = 388,997.40 × 72,343.10
  4. Step 4: Simplify right side
    259,331.60x = 28,141,277,807.94
  5. Step 5: Solve for x
    x = 28,141,277,807.94/259,331.60
  6. Step 6: Final answer
    x = 108,514.65

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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.