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Finding the Fourth Proportional to 440,443.91, 660,764.31 and 140,942.47

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Solution

The fourth proportional to 440,443.91, 660,764.31 and 140,942.47 is: 211,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,443.91 : 660,764.31 = 140,942.47 : x
  2. Step 2: Convert to fraction form
    440,443.91/660,764.31 = 140,942.47/x
  3. Step 3: Cross multiply
    440,443.91x = 660,764.31 × 140,942.47
  4. Step 4: Simplify right side
    440,443.91x = 93,129,749,930.71
  5. Step 5: Solve for x
    x = 93,129,749,930.71/440,443.91
  6. Step 6: Final answer
    x = 211,445.20

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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.