Home / 257,655.02-386,088.38-137,729.04

Finding the Fourth Proportional to 257,655.02, 386,088.38 and 137,729.04

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Solution

The fourth proportional to 257,655.02, 386,088.38 and 137,729.04 is: 206,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,655.02 : 386,088.38 = 137,729.04 : x
  2. Step 2: Convert to fraction form
    257,655.02/386,088.38 = 137,729.04/x
  3. Step 3: Cross multiply
    257,655.02x = 386,088.38 × 137,729.04
  4. Step 4: Simplify right side
    257,655.02x = 53,175,581,932.56
  5. Step 5: Solve for x
    x = 53,175,581,932.56/257,655.02
  6. Step 6: Final answer
    x = 206,382.87

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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.