Home / 420,201.56-579,886.26-229,221.96

Finding the Fourth Proportional to 420,201.56, 579,886.26 and 229,221.96

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Solution

The fourth proportional to 420,201.56, 579,886.26 and 229,221.96 is: 316,330.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,201.56 : 579,886.26 = 229,221.96 : x
  2. Step 2: Convert to fraction form
    420,201.56/579,886.26 = 229,221.96/x
  3. Step 3: Cross multiply
    420,201.56x = 579,886.26 × 229,221.96
  4. Step 4: Simplify right side
    420,201.56x = 132,922,665,094.27
  5. Step 5: Solve for x
    x = 132,922,665,094.27/420,201.56
  6. Step 6: Final answer
    x = 316,330.73

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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.