Home / 420,262.97-579,960.17-238,974.89

Finding the Fourth Proportional to 420,262.97, 579,960.17 and 238,974.89

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Solution

The fourth proportional to 420,262.97, 579,960.17 and 238,974.89 is: 329,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,262.97 : 579,960.17 = 238,974.89 : x
  2. Step 2: Convert to fraction form
    420,262.97/579,960.17 = 238,974.89/x
  3. Step 3: Cross multiply
    420,262.97x = 579,960.17 × 238,974.89
  4. Step 4: Simplify right side
    420,262.97x = 138,595,913,735.46
  5. Step 5: Solve for x
    x = 138,595,913,735.46/420,262.97
  6. Step 6: Final answer
    x = 329,783.79

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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.