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Finding the Fourth Proportional to 407,879.70, 611,576.55 and 250,221.30

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Solution

The fourth proportional to 407,879.70, 611,576.55 and 250,221.30 is: 375,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,879.70 : 611,576.55 = 250,221.30 : x
  2. Step 2: Convert to fraction form
    407,879.70/611,576.55 = 250,221.30/x
  3. Step 3: Cross multiply
    407,879.70x = 611,576.55 × 250,221.30
  4. Step 4: Simplify right side
    407,879.70x = 153,029,479,390.52
  5. Step 5: Solve for x
    x = 153,029,479,390.52/407,879.70
  6. Step 6: Final answer
    x = 375,182.88

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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.