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Finding the Fourth Proportional to 252,123.75, 347,930.78 and 151,521.75

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Solution

The fourth proportional to 252,123.75, 347,930.78 and 151,521.75 is: 209,100.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,123.75 : 347,930.78 = 151,521.75 : x
  2. Step 2: Convert to fraction form
    252,123.75/347,930.78 = 151,521.75/x
  3. Step 3: Cross multiply
    252,123.75x = 347,930.78 × 151,521.75
  4. Step 4: Simplify right side
    252,123.75x = 52,719,079,906.86
  5. Step 5: Solve for x
    x = 52,719,079,906.86/252,123.75
  6. Step 6: Final answer
    x = 209,100.02

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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.