Home / 318,747.54-475,789.20-280,914.66

Finding the Fourth Proportional to 318,747.54, 475,789.20 and 280,914.66

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Solution

The fourth proportional to 318,747.54, 475,789.20 and 280,914.66 is: 419,316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,747.54 : 475,789.20 = 280,914.66 : x
  2. Step 2: Convert to fraction form
    318,747.54/475,789.20 = 280,914.66/x
  3. Step 3: Cross multiply
    318,747.54x = 475,789.20 × 280,914.66
  4. Step 4: Simplify right side
    318,747.54x = 133,656,161,349.67
  5. Step 5: Solve for x
    x = 133,656,161,349.67/318,747.54
  6. Step 6: Final answer
    x = 419,316.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.