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Finding the Fourth Proportional to 283,599.11, 391,375.13 and 156,282.90

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Solution

The fourth proportional to 283,599.11, 391,375.13 and 156,282.90 is: 215,675.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,599.11 : 391,375.13 = 156,282.90 : x
  2. Step 2: Convert to fraction form
    283,599.11/391,375.13 = 156,282.90/x
  3. Step 3: Cross multiply
    283,599.11x = 391,375.13 × 156,282.90
  4. Step 4: Simplify right side
    283,599.11x = 61,165,239,522.86
  5. Step 5: Solve for x
    x = 61,165,239,522.86/283,599.11
  6. Step 6: Final answer
    x = 215,675.01

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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.