Home / 420,029.22-579,619.29-238,717.20

Finding the Fourth Proportional to 420,029.22, 579,619.29 and 238,717.20

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Solution

The fourth proportional to 420,029.22, 579,619.29 and 238,717.20 is: 329,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,029.22 : 579,619.29 = 238,717.20 : x
  2. Step 2: Convert to fraction form
    420,029.22/579,619.29 = 238,717.20/x
  3. Step 3: Cross multiply
    420,029.22x = 579,619.29 × 238,717.20
  4. Step 4: Simplify right side
    420,029.22x = 138,365,093,974.79
  5. Step 5: Solve for x
    x = 138,365,093,974.79/420,029.22
  6. Step 6: Final answer
    x = 329,417.78

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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.