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Finding the Fourth Proportional to 274,728.50, 378,753.12 and 234,870.42

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Solution

The fourth proportional to 274,728.50, 378,753.12 and 234,870.42 is: 323,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,728.50 : 378,753.12 = 234,870.42 : x
  2. Step 2: Convert to fraction form
    274,728.50/378,753.12 = 234,870.42/x
  3. Step 3: Cross multiply
    274,728.50x = 378,753.12 × 234,870.42
  4. Step 4: Simplify right side
    274,728.50x = 88,957,904,370.71
  5. Step 5: Solve for x
    x = 88,957,904,370.71/274,728.50
  6. Step 6: Final answer
    x = 323,802.98

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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.