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Finding the Fourth Proportional to 143,522.31, 215,294.40 and 43,691.04

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Solution

The fourth proportional to 143,522.31, 215,294.40 and 43,691.04 is: 65,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,522.31 : 215,294.40 = 43,691.04 : x
  2. Step 2: Convert to fraction form
    143,522.31/215,294.40 = 43,691.04/x
  3. Step 3: Cross multiply
    143,522.31x = 215,294.40 × 43,691.04
  4. Step 4: Simplify right side
    143,522.31x = 9,406,436,242.18
  5. Step 5: Solve for x
    x = 9,406,436,242.18/143,522.31
  6. Step 6: Final answer
    x = 65,539.89

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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.