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Finding the Fourth Proportional to 518,737.38, 715,857.58 and 280,273.38

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Solution

The fourth proportional to 518,737.38, 715,857.58 and 280,273.38 is: 386,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,737.38 : 715,857.58 = 280,273.38 : x
  2. Step 2: Convert to fraction form
    518,737.38/715,857.58 = 280,273.38/x
  3. Step 3: Cross multiply
    518,737.38x = 715,857.58 × 280,273.38
  4. Step 4: Simplify right side
    518,737.38x = 200,635,823,545.22
  5. Step 5: Solve for x
    x = 200,635,823,545.22/518,737.38
  6. Step 6: Final answer
    x = 386,777.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.