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Finding the Fourth Proportional to 482,394.89, 665,616.92 and 278,371.38

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Solution

The fourth proportional to 482,394.89, 665,616.92 and 278,371.38 is: 384,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,394.89 : 665,616.92 = 278,371.38 : x
  2. Step 2: Convert to fraction form
    482,394.89/665,616.92 = 278,371.38/x
  3. Step 3: Cross multiply
    482,394.89x = 665,616.92 × 278,371.38
  4. Step 4: Simplify right side
    482,394.89x = 185,288,697,243.67
  5. Step 5: Solve for x
    x = 185,288,697,243.67/482,394.89
  6. Step 6: Final answer
    x = 384,101.70

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1.5x scale

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.