Home / 420,223.11-579,935.30-238,951.91

Finding the Fourth Proportional to 420,223.11, 579,935.30 and 238,951.91

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Solution

The fourth proportional to 420,223.11, 579,935.30 and 238,951.91 is: 329,769.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,223.11 : 579,935.30 = 238,951.91 : x
  2. Step 2: Convert to fraction form
    420,223.11/579,935.30 = 238,951.91/x
  3. Step 3: Cross multiply
    420,223.11x = 579,935.30 × 238,951.91
  4. Step 4: Simplify right side
    420,223.11x = 138,576,643,516.99
  5. Step 5: Solve for x
    x = 138,576,643,516.99/420,223.11
  6. Step 6: Final answer
    x = 329,769.21

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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.