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Finding the Fourth Proportional to 252,087.76, 347,888.54 and 138,917.80

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Solution

The fourth proportional to 252,087.76, 347,888.54 and 138,917.80 is: 191,710.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,087.76 : 347,888.54 = 138,917.80 : x
  2. Step 2: Convert to fraction form
    252,087.76/347,888.54 = 138,917.80/x
  3. Step 3: Cross multiply
    252,087.76x = 347,888.54 × 138,917.80
  4. Step 4: Simplify right side
    252,087.76x = 48,327,910,622.01
  5. Step 5: Solve for x
    x = 48,327,910,622.01/252,087.76
  6. Step 6: Final answer
    x = 191,710.66

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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.