Home / 397,178.12-547,876.38-251,928.56

Finding the Fourth Proportional to 397,178.12, 547,876.38 and 251,928.56

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Solution

The fourth proportional to 397,178.12, 547,876.38 and 251,928.56 is: 347,515.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,178.12 : 547,876.38 = 251,928.56 : x
  2. Step 2: Convert to fraction form
    397,178.12/547,876.38 = 251,928.56/x
  3. Step 3: Cross multiply
    397,178.12x = 547,876.38 × 251,928.56
  4. Step 4: Simplify right side
    397,178.12x = 138,025,707,471.41
  5. Step 5: Solve for x
    x = 138,025,707,471.41/397,178.12
  6. Step 6: Final answer
    x = 347,515.89

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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.