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Finding the Fourth Proportional to 619,841.92, 930,211.08 and 220,486

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Solution

The fourth proportional to 619,841.92, 930,211.08 and 220,486 is: 330,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,841.92 : 930,211.08 = 220,486 : x
  2. Step 2: Convert to fraction form
    619,841.92/930,211.08 = 220,486/x
  3. Step 3: Cross multiply
    619,841.92x = 930,211.08 × 220,486
  4. Step 4: Simplify right side
    619,841.92x = 205,098,520,184.88
  5. Step 5: Solve for x
    x = 205,098,520,184.88/619,841.92
  6. Step 6: Final answer
    x = 330,888.43

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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.