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Finding the Fourth Proportional to 440,816.70, 661,287.32 and 141,227.20

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Solution

The fourth proportional to 440,816.70, 661,287.32 and 141,227.20 is: 211,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,816.70 : 661,287.32 = 141,227.20 : x
  2. Step 2: Convert to fraction form
    440,816.70/661,287.32 = 141,227.20/x
  3. Step 3: Cross multiply
    440,816.70x = 661,287.32 × 141,227.20
  4. Step 4: Simplify right side
    440,816.70x = 93,391,756,599.10
  5. Step 5: Solve for x
    x = 93,391,756,599.10/440,816.70
  6. Step 6: Final answer
    x = 211,860.75

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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.