Home / 391,245.88-539,921.55-230,107.72

Finding the Fourth Proportional to 391,245.88, 539,921.55 and 230,107.72

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Solution

The fourth proportional to 391,245.88, 539,921.55 and 230,107.72 is: 317,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,245.88 : 539,921.55 = 230,107.72 : x
  2. Step 2: Convert to fraction form
    391,245.88/539,921.55 = 230,107.72/x
  3. Step 3: Cross multiply
    391,245.88x = 539,921.55 × 230,107.72
  4. Step 4: Simplify right side
    391,245.88x = 124,240,116,849.37
  5. Step 5: Solve for x
    x = 124,240,116,849.37/391,245.88
  6. Step 6: Final answer
    x = 317,549.97

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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.