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Finding the Fourth Proportional to 539,357.90, 808,468.11 and 179,432.61

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Solution

The fourth proportional to 539,357.90, 808,468.11 and 179,432.61 is: 268,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,357.90 : 808,468.11 = 179,432.61 : x
  2. Step 2: Convert to fraction form
    539,357.90/808,468.11 = 179,432.61/x
  3. Step 3: Cross multiply
    539,357.90x = 808,468.11 × 179,432.61
  4. Step 4: Simplify right side
    539,357.90x = 145,065,543,079.07
  5. Step 5: Solve for x
    x = 145,065,543,079.07/539,357.90
  6. Step 6: Final answer
    x = 268,959.71

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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.