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Finding the Fourth Proportional to 440,181.92, 660,185.40 and 215,445.80

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Solution

The fourth proportional to 440,181.92, 660,185.40 and 215,445.80 is: 323,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,181.92 : 660,185.40 = 215,445.80 : x
  2. Step 2: Convert to fraction form
    440,181.92/660,185.40 = 215,445.80/x
  3. Step 3: Cross multiply
    440,181.92x = 660,185.40 × 215,445.80
  4. Step 4: Simplify right side
    440,181.92x = 142,234,171,651.32
  5. Step 5: Solve for x
    x = 142,234,171,651.32/440,181.92
  6. Step 6: Final answer
    x = 323,125.88

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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.