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Finding the Fourth Proportional to 312,126.50, 468,269.03 and 87,487.88

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Solution

The fourth proportional to 312,126.50, 468,269.03 and 87,487.88 is: 131,254.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,126.50 : 468,269.03 = 87,487.88 : x
  2. Step 2: Convert to fraction form
    312,126.50/468,269.03 = 87,487.88/x
  3. Step 3: Cross multiply
    312,126.50x = 468,269.03 × 87,487.88
  4. Step 4: Simplify right side
    312,126.50x = 40,967,861,925.57
  5. Step 5: Solve for x
    x = 40,967,861,925.57/312,126.50
  6. Step 6: Final answer
    x = 131,254.04

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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.