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Finding the Fourth Proportional to 548,514.89, 756,955.36 and 306,819.95

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Solution

The fourth proportional to 548,514.89, 756,955.36 and 306,819.95 is: 423,414.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,514.89 : 756,955.36 = 306,819.95 : x
  2. Step 2: Convert to fraction form
    548,514.89/756,955.36 = 306,819.95/x
  3. Step 3: Cross multiply
    548,514.89x = 756,955.36 × 306,819.95
  4. Step 4: Simplify right side
    548,514.89x = 232,249,002,306.18
  5. Step 5: Solve for x
    x = 232,249,002,306.18/548,514.89
  6. Step 6: Final answer
    x = 423,414.22

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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.