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Finding the Fourth Proportional to 331,344.60, 497,016.90 and 109,728.60

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Solution

The fourth proportional to 331,344.60, 497,016.90 and 109,728.60 is: 164,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,344.60 : 497,016.90 = 109,728.60 : x
  2. Step 2: Convert to fraction form
    331,344.60/497,016.90 = 109,728.60/x
  3. Step 3: Cross multiply
    331,344.60x = 497,016.90 × 109,728.60
  4. Step 4: Simplify right side
    331,344.60x = 54,536,968,613.34
  5. Step 5: Solve for x
    x = 54,536,968,613.34/331,344.60
  6. Step 6: Final answer
    x = 164,592.90

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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.