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Finding the Fourth Proportional to 272,624.77, 408,905.88 and 72,960.72

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Solution

The fourth proportional to 272,624.77, 408,905.88 and 72,960.72 is: 109,432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,624.77 : 408,905.88 = 72,960.72 : x
  2. Step 2: Convert to fraction form
    272,624.77/408,905.88 = 72,960.72/x
  3. Step 3: Cross multiply
    272,624.77x = 408,905.88 × 72,960.72
  4. Step 4: Simplify right side
    272,624.77x = 29,834,067,417.03
  5. Step 5: Solve for x
    x = 29,834,067,417.03/272,624.77
  6. Step 6: Final answer
    x = 109,432.71

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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.