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Finding the Fourth Proportional to 519,934.80, 779,902.20 and 145,909.20

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Solution

The fourth proportional to 519,934.80, 779,902.20 and 145,909.20 is: 218,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,934.80 : 779,902.20 = 145,909.20 : x
  2. Step 2: Convert to fraction form
    519,934.80/779,902.20 = 145,909.20/x
  3. Step 3: Cross multiply
    519,934.80x = 779,902.20 × 145,909.20
  4. Step 4: Simplify right side
    519,934.80x = 113,794,906,080.24
  5. Step 5: Solve for x
    x = 113,794,906,080.24/519,934.80
  6. Step 6: Final answer
    x = 218,863.80

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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.