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Finding the Fourth Proportional to 440,081.20, 660,121.80 and 107,657.20

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Solution

The fourth proportional to 440,081.20, 660,121.80 and 107,657.20 is: 161,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,081.20 : 660,121.80 = 107,657.20 : x
  2. Step 2: Convert to fraction form
    440,081.20/660,121.80 = 107,657.20/x
  3. Step 3: Cross multiply
    440,081.20x = 660,121.80 × 107,657.20
  4. Step 4: Simplify right side
    440,081.20x = 71,066,864,646.96
  5. Step 5: Solve for x
    x = 71,066,864,646.96/440,081.20
  6. Step 6: Final answer
    x = 161,485.80

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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.