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Finding the Fourth Proportional to 486,593.20, 729,889.80 and 154,169.20

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Solution

The fourth proportional to 486,593.20, 729,889.80 and 154,169.20 is: 231,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,593.20 : 729,889.80 = 154,169.20 : x
  2. Step 2: Convert to fraction form
    486,593.20/729,889.80 = 154,169.20/x
  3. Step 3: Cross multiply
    486,593.20x = 729,889.80 × 154,169.20
  4. Step 4: Simplify right side
    486,593.20x = 112,526,526,554.16
  5. Step 5: Solve for x
    x = 112,526,526,554.16/486,593.20
  6. Step 6: Final answer
    x = 231,253.80

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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.