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Finding the Fourth Proportional to 144,688.62, 217,044.15 and 43,478.77

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Solution

The fourth proportional to 144,688.62, 217,044.15 and 43,478.77 is: 65,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,688.62 : 217,044.15 = 43,478.77 : x
  2. Step 2: Convert to fraction form
    144,688.62/217,044.15 = 43,478.77/x
  3. Step 3: Cross multiply
    144,688.62x = 217,044.15 × 43,478.77
  4. Step 4: Simplify right side
    144,688.62x = 9,436,812,677.70
  5. Step 5: Solve for x
    x = 9,436,812,677.70/144,688.62
  6. Step 6: Final answer
    x = 65,221.53

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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.