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Finding the Fourth Proportional to 424,156.68, 636,218.40 and 143,673.92

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Solution

The fourth proportional to 424,156.68, 636,218.40 and 143,673.92 is: 215,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,156.68 : 636,218.40 = 143,673.92 : x
  2. Step 2: Convert to fraction form
    424,156.68/636,218.40 = 143,673.92/x
  3. Step 3: Cross multiply
    424,156.68x = 636,218.40 × 143,673.92
  4. Step 4: Simplify right side
    424,156.68x = 91,407,991,504.13
  5. Step 5: Solve for x
    x = 91,407,991,504.13/424,156.68
  6. Step 6: Final answer
    x = 215,505.25

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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.