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Finding the Fourth Proportional to 402,705.12, 603,251.22 and 242,691.96

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Solution

The fourth proportional to 402,705.12, 603,251.22 and 242,691.96 is: 363,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,705.12 : 603,251.22 = 242,691.96 : x
  2. Step 2: Convert to fraction form
    402,705.12/603,251.22 = 242,691.96/x
  3. Step 3: Cross multiply
    402,705.12x = 603,251.22 × 242,691.96
  4. Step 4: Simplify right side
    402,705.12x = 146,404,220,954.19
  5. Step 5: Solve for x
    x = 146,404,220,954.19/402,705.12
  6. Step 6: Final answer
    x = 363,551.92

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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.