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Finding the Fourth Proportional to 329,248.60, 493,861.76 and 139,586.90

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Solution

The fourth proportional to 329,248.60, 493,861.76 and 139,586.90 is: 209,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,248.60 : 493,861.76 = 139,586.90 : x
  2. Step 2: Convert to fraction form
    329,248.60/493,861.76 = 139,586.90/x
  3. Step 3: Cross multiply
    329,248.60x = 493,861.76 × 139,586.90
  4. Step 4: Simplify right side
    329,248.60x = 68,936,629,463.15
  5. Step 5: Solve for x
    x = 68,936,629,463.15/329,248.60
  6. Step 6: Final answer
    x = 209,375.62

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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.