Home / 420,240.97-579,933.90-229,258.36

Finding the Fourth Proportional to 420,240.97, 579,933.90 and 229,258.36

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Solution

The fourth proportional to 420,240.97, 579,933.90 and 229,258.36 is: 316,377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,240.97 : 579,933.90 = 229,258.36 : x
  2. Step 2: Convert to fraction form
    420,240.97/579,933.90 = 229,258.36/x
  3. Step 3: Cross multiply
    420,240.97x = 579,933.90 × 229,258.36
  4. Step 4: Simplify right side
    420,240.97x = 132,954,690,776.44
  5. Step 5: Solve for x
    x = 132,954,690,776.44/420,240.97
  6. Step 6: Final answer
    x = 316,377.27

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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.