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Finding the Fourth Proportional to 482,328.96, 665,654.40 and 281,137.92

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Solution

The fourth proportional to 482,328.96, 665,654.40 and 281,137.92 is: 387,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,328.96 : 665,654.40 = 281,137.92 : x
  2. Step 2: Convert to fraction form
    482,328.96/665,654.40 = 281,137.92/x
  3. Step 3: Cross multiply
    482,328.96x = 665,654.40 × 281,137.92
  4. Step 4: Simplify right side
    482,328.96x = 187,140,693,454.85
  5. Step 5: Solve for x
    x = 187,140,693,454.85/482,328.96
  6. Step 6: Final answer
    x = 387,993.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.