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Finding the Fourth Proportional to 438,230.10, 656,891.55 and 238,127.70

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Solution

The fourth proportional to 438,230.10, 656,891.55 and 238,127.70 is: 356,945.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,230.10 : 656,891.55 = 238,127.70 : x
  2. Step 2: Convert to fraction form
    438,230.10/656,891.55 = 238,127.70/x
  3. Step 3: Cross multiply
    438,230.10x = 656,891.55 × 238,127.70
  4. Step 4: Simplify right side
    438,230.10x = 156,424,073,950.94
  5. Step 5: Solve for x
    x = 156,424,073,950.94/438,230.10
  6. Step 6: Final answer
    x = 356,945.07

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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.