Home / 420,294.71-579,982.92-239,050.73

Finding the Fourth Proportional to 420,294.71, 579,982.92 and 239,050.73

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Solution

The fourth proportional to 420,294.71, 579,982.92 and 239,050.73 is: 329,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,294.71 : 579,982.92 = 239,050.73 : x
  2. Step 2: Convert to fraction form
    420,294.71/579,982.92 = 239,050.73/x
  3. Step 3: Cross multiply
    420,294.71x = 579,982.92 × 239,050.73
  4. Step 4: Simplify right side
    420,294.71x = 138,645,337,513.62
  5. Step 5: Solve for x
    x = 138,645,337,513.62/420,294.71
  6. Step 6: Final answer
    x = 329,876.48

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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.