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Finding the Fourth Proportional to 256,151.12, 384,245.10 and 98,379.56

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Solution

The fourth proportional to 256,151.12, 384,245.10 and 98,379.56 is: 147,576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,151.12 : 384,245.10 = 98,379.56 : x
  2. Step 2: Convert to fraction form
    256,151.12/384,245.10 = 98,379.56/x
  3. Step 3: Cross multiply
    256,151.12x = 384,245.10 × 98,379.56
  4. Step 4: Simplify right side
    256,151.12x = 37,801,861,948.93
  5. Step 5: Solve for x
    x = 37,801,861,948.93/256,151.12
  6. Step 6: Final answer
    x = 147,576.41

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1.5x scale

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.