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Finding the Fourth Proportional to 424,160.17, 636,223.65 and 143,677.42

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Solution

The fourth proportional to 424,160.17, 636,223.65 and 143,677.42 is: 215,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,160.17 : 636,223.65 = 143,677.42 : x
  2. Step 2: Convert to fraction form
    424,160.17/636,223.65 = 143,677.42/x
  3. Step 3: Cross multiply
    424,160.17x = 636,223.65 × 143,677.42
  4. Step 4: Simplify right side
    424,160.17x = 91,410,972,574.98
  5. Step 5: Solve for x
    x = 91,410,972,574.98/424,160.17
  6. Step 6: Final answer
    x = 215,510.51

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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.