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Finding the Fourth Proportional to 443,398.60, 665,357.10 and 162,944.20

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Solution

The fourth proportional to 443,398.60, 665,357.10 and 162,944.20 is: 244,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,398.60 : 665,357.10 = 162,944.20 : x
  2. Step 2: Convert to fraction form
    443,398.60/665,357.10 = 162,944.20/x
  3. Step 3: Cross multiply
    443,398.60x = 665,357.10 × 162,944.20
  4. Step 4: Simplify right side
    443,398.60x = 108,416,080,373.82
  5. Step 5: Solve for x
    x = 108,416,080,373.82/443,398.60
  6. Step 6: Final answer
    x = 244,511.55

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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.