Home / 420,102.42-579,735.50-229,115.76

Finding the Fourth Proportional to 420,102.42, 579,735.50 and 229,115.76

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Solution

The fourth proportional to 420,102.42, 579,735.50 and 229,115.76 is: 316,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,102.42 : 579,735.50 = 229,115.76 : x
  2. Step 2: Convert to fraction form
    420,102.42/579,735.50 = 229,115.76/x
  3. Step 3: Cross multiply
    420,102.42x = 579,735.50 × 229,115.76
  4. Step 4: Simplify right side
    420,102.42x = 132,826,538,535.90
  5. Step 5: Solve for x
    x = 132,826,538,535.90/420,102.42
  6. Step 6: Final answer
    x = 316,176.56

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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.