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Finding the Fourth Proportional to 513,143.20, 769,714.80 and 158,125.60

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Solution

The fourth proportional to 513,143.20, 769,714.80 and 158,125.60 is: 237,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,143.20 : 769,714.80 = 158,125.60 : x
  2. Step 2: Convert to fraction form
    513,143.20/769,714.80 = 158,125.60/x
  3. Step 3: Cross multiply
    513,143.20x = 769,714.80 × 158,125.60
  4. Step 4: Simplify right side
    513,143.20x = 121,711,614,578.88
  5. Step 5: Solve for x
    x = 121,711,614,578.88/513,143.20
  6. Step 6: Final answer
    x = 237,188.40

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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.