Home / 420,127.12-579,772.86-238,839.13

Finding the Fourth Proportional to 420,127.12, 579,772.86 and 238,839.13

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Solution

The fourth proportional to 420,127.12, 579,772.86 and 238,839.13 is: 329,596.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,127.12 : 579,772.86 = 238,839.13 : x
  2. Step 2: Convert to fraction form
    420,127.12/579,772.86 = 238,839.13/x
  3. Step 3: Cross multiply
    420,127.12x = 579,772.86 × 238,839.13
  4. Step 4: Simplify right side
    420,127.12x = 138,472,445,480.01
  5. Step 5: Solve for x
    x = 138,472,445,480.01/420,127.12
  6. Step 6: Final answer
    x = 329,596.54

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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.