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Finding the Fourth Proportional to 272,644.89, 408,972.80 and 72,964.95

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Solution

The fourth proportional to 272,644.89, 408,972.80 and 72,964.95 is: 109,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,644.89 : 408,972.80 = 72,964.95 : x
  2. Step 2: Convert to fraction form
    272,644.89/408,972.80 = 72,964.95/x
  3. Step 3: Cross multiply
    272,644.89x = 408,972.80 × 72,964.95
  4. Step 4: Simplify right side
    272,644.89x = 29,840,680,442.17
  5. Step 5: Solve for x
    x = 29,840,680,442.17/272,644.89
  6. Step 6: Final answer
    x = 109,448.89

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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.