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Finding the Fourth Proportional to 251,744.56, 347,407.59 and 138,566.50

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Solution

The fourth proportional to 251,744.56, 347,407.59 and 138,566.50 is: 191,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,744.56 : 347,407.59 = 138,566.50 : x
  2. Step 2: Convert to fraction form
    251,744.56/347,407.59 = 138,566.50/x
  3. Step 3: Cross multiply
    251,744.56x = 347,407.59 × 138,566.50
  4. Step 4: Simplify right side
    251,744.56x = 48,139,053,819.74
  5. Step 5: Solve for x
    x = 48,139,053,819.74/251,744.56
  6. Step 6: Final answer
    x = 191,221.82

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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.