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Finding the Fourth Proportional to 548,549.92, 756,694.20 and 319,081.38

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Solution

The fourth proportional to 548,549.92, 756,694.20 and 319,081.38 is: 440,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,549.92 : 756,694.20 = 319,081.38 : x
  2. Step 2: Convert to fraction form
    548,549.92/756,694.20 = 319,081.38/x
  3. Step 3: Cross multiply
    548,549.92x = 756,694.20 × 319,081.38
  4. Step 4: Simplify right side
    548,549.92x = 241,447,027,932.95
  5. Step 5: Solve for x
    x = 241,447,027,932.95/548,549.92
  6. Step 6: Final answer
    x = 440,155.07

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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.