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Finding the Fourth Proportional to 499,274.80, 748,912.20 and 199,801.60

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Solution

The fourth proportional to 499,274.80, 748,912.20 and 199,801.60 is: 299,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,274.80 : 748,912.20 = 199,801.60 : x
  2. Step 2: Convert to fraction form
    499,274.80/748,912.20 = 199,801.60/x
  3. Step 3: Cross multiply
    499,274.80x = 748,912.20 × 199,801.60
  4. Step 4: Simplify right side
    499,274.80x = 149,633,855,819.52
  5. Step 5: Solve for x
    x = 149,633,855,819.52/499,274.80
  6. Step 6: Final answer
    x = 299,702.40

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Similar ratio
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1.5x scale

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.