Home / 420,251.78-579,944.74-238,963.74

Finding the Fourth Proportional to 420,251.78, 579,944.74 and 238,963.74

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Solution

The fourth proportional to 420,251.78, 579,944.74 and 238,963.74 is: 329,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,251.78 : 579,944.74 = 238,963.74 : x
  2. Step 2: Convert to fraction form
    420,251.78/579,944.74 = 238,963.74/x
  3. Step 3: Cross multiply
    420,251.78x = 579,944.74 × 238,963.74
  4. Step 4: Simplify right side
    420,251.78x = 138,585,764,063.73
  5. Step 5: Solve for x
    x = 138,585,764,063.73/420,251.78
  6. Step 6: Final answer
    x = 329,768.42

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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.