Home / 420,103.44-579,719.70-238,790.16

Finding the Fourth Proportional to 420,103.44, 579,719.70 and 238,790.16

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Solution

The fourth proportional to 420,103.44, 579,719.70 and 238,790.16 is: 329,517.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,103.44 : 579,719.70 = 238,790.16 : x
  2. Step 2: Convert to fraction form
    420,103.44/579,719.70 = 238,790.16/x
  3. Step 3: Cross multiply
    420,103.44x = 579,719.70 × 238,790.16
  4. Step 4: Simplify right side
    420,103.44x = 138,431,359,918.15
  5. Step 5: Solve for x
    x = 138,431,359,918.15/420,103.44
  6. Step 6: Final answer
    x = 329,517.32

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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.