Home / 420,515.52-580,322.40-229,546.56

Finding the Fourth Proportional to 420,515.52, 580,322.40 and 229,546.56

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Solution

The fourth proportional to 420,515.52, 580,322.40 and 229,546.56 is: 316,780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,515.52 : 580,322.40 = 229,546.56 : x
  2. Step 2: Convert to fraction form
    420,515.52/580,322.40 = 229,546.56/x
  3. Step 3: Cross multiply
    420,515.52x = 580,322.40 × 229,546.56
  4. Step 4: Simplify right side
    420,515.52x = 133,211,010,610.94
  5. Step 5: Solve for x
    x = 133,211,010,610.94/420,515.52
  6. Step 6: Final answer
    x = 316,780.25

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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.