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Finding the Fourth Proportional to 252,086.88, 347,887.19 and 138,916.92

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Solution

The fourth proportional to 252,086.88, 347,887.19 and 138,916.92 is: 191,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,086.88 : 347,887.19 = 138,916.92 : x
  2. Step 2: Convert to fraction form
    252,086.88/347,887.19 = 138,916.92/x
  3. Step 3: Cross multiply
    252,086.88x = 347,887.19 × 138,916.92
  4. Step 4: Simplify right side
    252,086.88x = 48,327,416,942.25
  5. Step 5: Solve for x
    x = 48,327,416,942.25/252,086.88
  6. Step 6: Final answer
    x = 191,709.37

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1.5x scale

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.