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Finding the Fourth Proportional to 402,310.80, 603,082.20 and 149,523.60

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Solution

The fourth proportional to 402,310.80, 603,082.20 and 149,523.60 is: 224,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,310.80 : 603,082.20 = 149,523.60 : x
  2. Step 2: Convert to fraction form
    402,310.80/603,082.20 = 149,523.60/x
  3. Step 3: Cross multiply
    402,310.80x = 603,082.20 × 149,523.60
  4. Step 4: Simplify right side
    402,310.80x = 90,175,021,639.92
  5. Step 5: Solve for x
    x = 90,175,021,639.92/402,310.80
  6. Step 6: Final answer
    x = 224,142.68

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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.