Home / 259,810.70-389,728.20-82,331.60

Finding the Fourth Proportional to 259,810.70, 389,728.20 and 82,331.60

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Solution

The fourth proportional to 259,810.70, 389,728.20 and 82,331.60 is: 123,501.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,810.70 : 389,728.20 = 82,331.60 : x
  2. Step 2: Convert to fraction form
    259,810.70/389,728.20 = 82,331.60/x
  3. Step 3: Cross multiply
    259,810.70x = 389,728.20 × 82,331.60
  4. Step 4: Simplify right side
    259,810.70x = 32,086,946,271.12
  5. Step 5: Solve for x
    x = 32,086,946,271.12/259,810.70
  6. Step 6: Final answer
    x = 123,501.25

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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.