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Finding the Fourth Proportional to 272,586.33, 408,879.39 and 72,901.53

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Solution

The fourth proportional to 272,586.33, 408,879.39 and 72,901.53 is: 109,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,586.33 : 408,879.39 = 72,901.53 : x
  2. Step 2: Convert to fraction form
    272,586.33/408,879.39 = 72,901.53/x
  3. Step 3: Cross multiply
    272,586.33x = 408,879.39 × 72,901.53
  4. Step 4: Simplify right side
    272,586.33x = 29,807,933,116.47
  5. Step 5: Solve for x
    x = 29,807,933,116.47/272,586.33
  6. Step 6: Final answer
    x = 109,352.27

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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.