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Finding the Fourth Proportional to 440,445.40, 660,766.56 and 140,943.96

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Solution

The fourth proportional to 440,445.40, 660,766.56 and 140,943.96 is: 211,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,445.40 : 660,766.56 = 140,943.96 : x
  2. Step 2: Convert to fraction form
    440,445.40/660,766.56 = 140,943.96/x
  3. Step 3: Cross multiply
    440,445.40x = 660,766.56 × 140,943.96
  4. Step 4: Simplify right side
    440,445.40x = 93,131,055,601.98
  5. Step 5: Solve for x
    x = 93,131,055,601.98/440,445.40
  6. Step 6: Final answer
    x = 211,447.45

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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.