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Finding the Fourth Proportional to 250,381.41, 375,595.41 and 81,902.84

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Solution

The fourth proportional to 250,381.41, 375,595.41 and 81,902.84 is: 122,861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,381.41 : 375,595.41 = 81,902.84 : x
  2. Step 2: Convert to fraction form
    250,381.41/375,595.41 = 81,902.84/x
  3. Step 3: Cross multiply
    250,381.41x = 375,595.41 × 81,902.84
  4. Step 4: Simplify right side
    250,381.41x = 30,762,328,891.99
  5. Step 5: Solve for x
    x = 30,762,328,891.99/250,381.41
  6. Step 6: Final answer
    x = 122,861.87

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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.