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Finding the Fourth Proportional to 251,765.55, 347,358.11 and 142,851.87

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Solution

The fourth proportional to 251,765.55, 347,358.11 and 142,851.87 is: 197,091.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,765.55 : 347,358.11 = 142,851.87 : x
  2. Step 2: Convert to fraction form
    251,765.55/347,358.11 = 142,851.87/x
  3. Step 3: Cross multiply
    251,765.55x = 347,358.11 × 142,851.87
  4. Step 4: Simplify right side
    251,765.55x = 49,620,754,858.91
  5. Step 5: Solve for x
    x = 49,620,754,858.91/251,765.55
  6. Step 6: Final answer
    x = 197,091.12

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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.