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Finding the Fourth Proportional to 424,165.20, 636,029.10 and 157,788.60

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Solution

The fourth proportional to 424,165.20, 636,029.10 and 157,788.60 is: 236,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,165.20 : 636,029.10 = 157,788.60 : x
  2. Step 2: Convert to fraction form
    424,165.20/636,029.10 = 157,788.60/x
  3. Step 3: Cross multiply
    424,165.20x = 636,029.10 × 157,788.60
  4. Step 4: Simplify right side
    424,165.20x = 100,358,141,248.26
  5. Step 5: Solve for x
    x = 100,358,141,248.26/424,165.20
  6. Step 6: Final answer
    x = 236,601.54

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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.