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Finding the Fourth Proportional to 486,167.20, 727,501.20 and 328,703.20

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Solution

The fourth proportional to 486,167.20, 727,501.20 and 328,703.20 is: 491,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,167.20 : 727,501.20 = 328,703.20 : x
  2. Step 2: Convert to fraction form
    486,167.20/727,501.20 = 328,703.20/x
  3. Step 3: Cross multiply
    486,167.20x = 727,501.20 × 328,703.20
  4. Step 4: Simplify right side
    486,167.20x = 239,131,972,443.84
  5. Step 5: Solve for x
    x = 239,131,972,443.84/486,167.20
  6. Step 6: Final answer
    x = 491,871.88

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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.