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Finding the Fourth Proportional to 424,344.31, 636,820.49 and 154,471.89

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Solution

The fourth proportional to 424,344.31, 636,820.49 and 154,471.89 is: 231,818.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,344.31 : 636,820.49 = 154,471.89 : x
  2. Step 2: Convert to fraction form
    424,344.31/636,820.49 = 154,471.89/x
  3. Step 3: Cross multiply
    424,344.31x = 636,820.49 × 154,471.89
  4. Step 4: Simplify right side
    424,344.31x = 98,370,860,724.56
  5. Step 5: Solve for x
    x = 98,370,860,724.56/424,344.31
  6. Step 6: Final answer
    x = 231,818.50

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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.