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Finding the Fourth Proportional to 379,512.01, 569,074.60 and 126,701.65

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Solution

The fourth proportional to 379,512.01, 569,074.60 and 126,701.65 is: 189,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,512.01 : 569,074.60 = 126,701.65 : x
  2. Step 2: Convert to fraction form
    379,512.01/569,074.60 = 126,701.65/x
  3. Step 3: Cross multiply
    379,512.01x = 569,074.60 × 126,701.65
  4. Step 4: Simplify right side
    379,512.01x = 72,102,690,793.09
  5. Step 5: Solve for x
    x = 72,102,690,793.09/379,512.01
  6. Step 6: Final answer
    x = 189,987.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.