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Finding the Fourth Proportional to 518,156.04, 715,044.55 and 288,712.41

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Solution

The fourth proportional to 518,156.04, 715,044.55 and 288,712.41 is: 398,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,156.04 : 715,044.55 = 288,712.41 : x
  2. Step 2: Convert to fraction form
    518,156.04/715,044.55 = 288,712.41/x
  3. Step 3: Cross multiply
    518,156.04x = 715,044.55 × 288,712.41
  4. Step 4: Simplify right side
    518,156.04x = 206,442,235,287.87
  5. Step 5: Solve for x
    x = 206,442,235,287.87/518,156.04
  6. Step 6: Final answer
    x = 398,417.12

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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.