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Finding the Fourth Proportional to 243,614.70, 365,421.87 and 66,147.75

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Solution

The fourth proportional to 243,614.70, 365,421.87 and 66,147.75 is: 99,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,614.70 : 365,421.87 = 66,147.75 : x
  2. Step 2: Convert to fraction form
    243,614.70/365,421.87 = 66,147.75/x
  3. Step 3: Cross multiply
    243,614.70x = 365,421.87 × 66,147.75
  4. Step 4: Simplify right side
    243,614.70x = 24,171,834,501.29
  5. Step 5: Solve for x
    x = 24,171,834,501.29/243,614.70
  6. Step 6: Final answer
    x = 99,221.58

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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.