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Finding the Fourth Proportional to 218,487, 327,748.29 and 60,715.47

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Solution

The fourth proportional to 218,487, 327,748.29 and 60,715.47 is: 91,078.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,487 : 327,748.29 = 60,715.47 : x
  2. Step 2: Convert to fraction form
    218,487/327,748.29 = 60,715.47/x
  3. Step 3: Cross multiply
    218,487x = 327,748.29 × 60,715.47
  4. Step 4: Simplify right side
    218,487x = 19,899,391,469.05
  5. Step 5: Solve for x
    x = 19,899,391,469.05/218,487
  6. Step 6: Final answer
    x = 91,078.15

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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.