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Finding the Fourth Proportional to 251,812.89, 347,500.67 and 138,635.55

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Solution

The fourth proportional to 251,812.89, 347,500.67 and 138,635.55 is: 191,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,812.89 : 347,500.67 = 138,635.55 : x
  2. Step 2: Convert to fraction form
    251,812.89/347,500.67 = 138,635.55/x
  3. Step 3: Cross multiply
    251,812.89x = 347,500.67 × 138,635.55
  4. Step 4: Simplify right side
    251,812.89x = 48,175,945,817.64
  5. Step 5: Solve for x
    x = 48,175,945,817.64/251,812.89
  6. Step 6: Final answer
    x = 191,316.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.