Home / 420,265.17-579,942.27-239,021.19

Finding the Fourth Proportional to 420,265.17, 579,942.27 and 239,021.19

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Solution

The fourth proportional to 420,265.17, 579,942.27 and 239,021.19 is: 329,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,265.17 : 579,942.27 = 239,021.19 : x
  2. Step 2: Convert to fraction form
    420,265.17/579,942.27 = 239,021.19/x
  3. Step 3: Cross multiply
    420,265.17x = 579,942.27 × 239,021.19
  4. Step 4: Simplify right side
    420,265.17x = 138,618,491,506.70
  5. Step 5: Solve for x
    x = 138,618,491,506.70/420,265.17
  6. Step 6: Final answer
    x = 329,835.78

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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.