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Finding the Fourth Proportional to 475,879.68, 656,732.34 and 261,028.80

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Solution

The fourth proportional to 475,879.68, 656,732.34 and 261,028.80 is: 360,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,879.68 : 656,732.34 = 261,028.80 : x
  2. Step 2: Convert to fraction form
    475,879.68/656,732.34 = 261,028.80/x
  3. Step 3: Cross multiply
    475,879.68x = 656,732.34 × 261,028.80
  4. Step 4: Simplify right side
    475,879.68x = 171,426,054,631.39
  5. Step 5: Solve for x
    x = 171,426,054,631.39/475,879.68
  6. Step 6: Final answer
    x = 360,229.83

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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.