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Finding the Fourth Proportional to 242,589.80, 363,755.10 and 84,823.40

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Solution

The fourth proportional to 242,589.80, 363,755.10 and 84,823.40 is: 127,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,589.80 : 363,755.10 = 84,823.40 : x
  2. Step 2: Convert to fraction form
    242,589.80/363,755.10 = 84,823.40/x
  3. Step 3: Cross multiply
    242,589.80x = 363,755.10 × 84,823.40
  4. Step 4: Simplify right side
    242,589.80x = 30,854,944,349.34
  5. Step 5: Solve for x
    x = 30,854,944,349.34/242,589.80
  6. Step 6: Final answer
    x = 127,189.78

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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.