Home / 420,396.90-580,160.06-229,422.61

Finding the Fourth Proportional to 420,396.90, 580,160.06 and 229,422.61

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Solution

The fourth proportional to 420,396.90, 580,160.06 and 229,422.61 is: 316,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,396.90 : 580,160.06 = 229,422.61 : x
  2. Step 2: Convert to fraction form
    420,396.90/580,160.06 = 229,422.61/x
  3. Step 3: Cross multiply
    420,396.90x = 580,160.06 × 229,422.61
  4. Step 4: Simplify right side
    420,396.90x = 133,101,835,182.96
  5. Step 5: Solve for x
    x = 133,101,835,182.96/420,396.90
  6. Step 6: Final answer
    x = 316,609.93

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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.