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Finding the Fourth Proportional to 145,489.72, 218,234.85 and 40,308.97

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Solution

The fourth proportional to 145,489.72, 218,234.85 and 40,308.97 is: 60,463.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,489.72 : 218,234.85 = 40,308.97 : x
  2. Step 2: Convert to fraction form
    145,489.72/218,234.85 = 40,308.97/x
  3. Step 3: Cross multiply
    145,489.72x = 218,234.85 × 40,308.97
  4. Step 4: Simplify right side
    145,489.72x = 8,796,822,021.60
  5. Step 5: Solve for x
    x = 8,796,822,021.60/145,489.72
  6. Step 6: Final answer
    x = 60,463.53

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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.