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Finding the Fourth Proportional to 548,049.29, 756,343.31 and 306,332.73

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Solution

The fourth proportional to 548,049.29, 756,343.31 and 306,332.73 is: 422,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,049.29 : 756,343.31 = 306,332.73 : x
  2. Step 2: Convert to fraction form
    548,049.29/756,343.31 = 306,332.73/x
  3. Step 3: Cross multiply
    548,049.29x = 756,343.31 × 306,332.73
  4. Step 4: Simplify right side
    548,049.29x = 231,692,709,437.87
  5. Step 5: Solve for x
    x = 231,692,709,437.87/548,049.29
  6. Step 6: Final answer
    x = 422,758.89

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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.