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Finding the Fourth Proportional to 424,164.68, 636,230.40 and 143,681.92

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Solution

The fourth proportional to 424,164.68, 636,230.40 and 143,681.92 is: 215,517.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,164.68 : 636,230.40 = 143,681.92 : x
  2. Step 2: Convert to fraction form
    424,164.68/636,230.40 = 143,681.92/x
  3. Step 3: Cross multiply
    424,164.68x = 636,230.40 × 143,681.92
  4. Step 4: Simplify right side
    424,164.68x = 91,414,805,434.37
  5. Step 5: Solve for x
    x = 91,414,805,434.37/424,164.68
  6. Step 6: Final answer
    x = 215,517.25

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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.