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Finding the Fourth Proportional to 250,221.71, 375,353.06 and 72,728.55

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Solution

The fourth proportional to 250,221.71, 375,353.06 and 72,728.55 is: 109,098.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,221.71 : 375,353.06 = 72,728.55 : x
  2. Step 2: Convert to fraction form
    250,221.71/375,353.06 = 72,728.55/x
  3. Step 3: Cross multiply
    250,221.71x = 375,353.06 × 72,728.55
  4. Step 4: Simplify right side
    250,221.71x = 27,298,883,428.22
  5. Step 5: Solve for x
    x = 27,298,883,428.22/250,221.71
  6. Step 6: Final answer
    x = 109,098.78

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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.