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Finding the Fourth Proportional to 442,930.20, 664,265.70 and 158,587.80

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Solution

The fourth proportional to 442,930.20, 664,265.70 and 158,587.80 is: 237,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,930.20 : 664,265.70 = 158,587.80 : x
  2. Step 2: Convert to fraction form
    442,930.20/664,265.70 = 158,587.80/x
  3. Step 3: Cross multiply
    442,930.20x = 664,265.70 × 158,587.80
  4. Step 4: Simplify right side
    442,930.20x = 105,344,435,978.46
  5. Step 5: Solve for x
    x = 105,344,435,978.46/442,930.20
  6. Step 6: Final answer
    x = 237,835.30

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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.