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Finding the Fourth Proportional to 272,489.88, 408,762.69 and 104,151.90

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Solution

The fourth proportional to 272,489.88, 408,762.69 and 104,151.90 is: 156,238.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,489.88 : 408,762.69 = 104,151.90 : x
  2. Step 2: Convert to fraction form
    272,489.88/408,762.69 = 104,151.90/x
  3. Step 3: Cross multiply
    272,489.88x = 408,762.69 × 104,151.90
  4. Step 4: Simplify right side
    272,489.88x = 42,573,410,812.61
  5. Step 5: Solve for x
    x = 42,573,410,812.61/272,489.88
  6. Step 6: Final answer
    x = 156,238.50

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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.