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Finding the Fourth Proportional to 251,734.58, 347,403.57 and 138,567.86

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Solution

The fourth proportional to 251,734.58, 347,403.57 and 138,567.86 is: 191,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,734.58 : 347,403.57 = 138,567.86 : x
  2. Step 2: Convert to fraction form
    251,734.58/347,403.57 = 138,567.86/x
  3. Step 3: Cross multiply
    251,734.58x = 347,403.57 × 138,567.86
  4. Step 4: Simplify right side
    251,734.58x = 48,138,969,251.26
  5. Step 5: Solve for x
    x = 48,138,969,251.26/251,734.58
  6. Step 6: Final answer
    x = 191,229.07

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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.