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Finding the Fourth Proportional to 498,522.78, 687,957.84 and 272,168.28

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Solution

The fourth proportional to 498,522.78, 687,957.84 and 272,168.28 is: 375,590.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,522.78 : 687,957.84 = 272,168.28 : x
  2. Step 2: Convert to fraction form
    498,522.78/687,957.84 = 272,168.28/x
  3. Step 3: Cross multiply
    498,522.78x = 687,957.84 × 272,168.28
  4. Step 4: Simplify right side
    498,522.78x = 187,240,302,025.32
  5. Step 5: Solve for x
    x = 187,240,302,025.32/498,522.78
  6. Step 6: Final answer
    x = 375,590.26

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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.