Home / 427,222.25-640,414.20-237,773.38

Finding the Fourth Proportional to 427,222.25, 640,414.20 and 237,773.38

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Solution

The fourth proportional to 427,222.25, 640,414.20 and 237,773.38 is: 356,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,222.25 : 640,414.20 = 237,773.38 : x
  2. Step 2: Convert to fraction form
    427,222.25/640,414.20 = 237,773.38/x
  3. Step 3: Cross multiply
    427,222.25x = 640,414.20 × 237,773.38
  4. Step 4: Simplify right side
    427,222.25x = 152,273,448,934.00
  5. Step 5: Solve for x
    x = 152,273,448,934.00/427,222.25
  6. Step 6: Final answer
    x = 356,426.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.