Home / 272,156.30-408,255.06-72,475.88

Finding the Fourth Proportional to 272,156.30, 408,255.06 and 72,475.88

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Solution

The fourth proportional to 272,156.30, 408,255.06 and 72,475.88 is: 108,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,156.30 : 408,255.06 = 72,475.88 : x
  2. Step 2: Convert to fraction form
    272,156.30/408,255.06 = 72,475.88/x
  3. Step 3: Cross multiply
    272,156.30x = 408,255.06 × 72,475.88
  4. Step 4: Simplify right side
    272,156.30x = 29,588,644,737.95
  5. Step 5: Solve for x
    x = 29,588,644,737.95/272,156.30
  6. Step 6: Final answer
    x = 108,719.31

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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.