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Finding the Fourth Proportional to 251,687.83, 347,336.90 and 144,278.59

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Solution

The fourth proportional to 251,687.83, 347,336.90 and 144,278.59 is: 199,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,687.83 : 347,336.90 = 144,278.59 : x
  2. Step 2: Convert to fraction form
    251,687.83/347,336.90 = 144,278.59/x
  3. Step 3: Cross multiply
    251,687.83x = 347,336.90 × 144,278.59
  4. Step 4: Simplify right side
    251,687.83x = 50,113,278,186.97
  5. Step 5: Solve for x
    x = 50,113,278,186.97/251,687.83
  6. Step 6: Final answer
    x = 199,108.87

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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.