Home / 419,772.20-579,299.16-238,480.82

Finding the Fourth Proportional to 419,772.20, 579,299.16 and 238,480.82

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Solution

The fourth proportional to 419,772.20, 579,299.16 and 238,480.82 is: 329,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,772.20 : 579,299.16 = 238,480.82 : x
  2. Step 2: Convert to fraction form
    419,772.20/579,299.16 = 238,480.82/x
  3. Step 3: Cross multiply
    419,772.20x = 579,299.16 × 238,480.82
  4. Step 4: Simplify right side
    419,772.20x = 138,151,738,702.11
  5. Step 5: Solve for x
    x = 138,151,738,702.11/419,772.20
  6. Step 6: Final answer
    x = 329,111.21

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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.