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Finding the Fourth Proportional to 539,164.80, 808,747.20 and 165,139.20

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Solution

The fourth proportional to 539,164.80, 808,747.20 and 165,139.20 is: 247,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,164.80 : 808,747.20 = 165,139.20 : x
  2. Step 2: Convert to fraction form
    539,164.80/808,747.20 = 165,139.20/x
  3. Step 3: Cross multiply
    539,164.80x = 808,747.20 × 165,139.20
  4. Step 4: Simplify right side
    539,164.80x = 133,555,865,610.24
  5. Step 5: Solve for x
    x = 133,555,865,610.24/539,164.80
  6. Step 6: Final answer
    x = 247,708.80

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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.