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Finding the Fourth Proportional to 432,838.60, 649,257.90 and 137,350.60

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Solution

The fourth proportional to 432,838.60, 649,257.90 and 137,350.60 is: 206,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,838.60 : 649,257.90 = 137,350.60 : x
  2. Step 2: Convert to fraction form
    432,838.60/649,257.90 = 137,350.60/x
  3. Step 3: Cross multiply
    432,838.60x = 649,257.90 × 137,350.60
  4. Step 4: Simplify right side
    432,838.60x = 89,175,962,119.74
  5. Step 5: Solve for x
    x = 89,175,962,119.74/432,838.60
  6. Step 6: Final answer
    x = 206,025.90

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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.