Home / 420,266.22-579,964.64-238,978.14

Finding the Fourth Proportional to 420,266.22, 579,964.64 and 238,978.14

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Solution

The fourth proportional to 420,266.22, 579,964.64 and 238,978.14 is: 329,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,266.22 : 579,964.64 = 238,978.14 : x
  2. Step 2: Convert to fraction form
    420,266.22/579,964.64 = 238,978.14/x
  3. Step 3: Cross multiply
    420,266.22x = 579,964.64 × 238,978.14
  4. Step 4: Simplify right side
    420,266.22x = 138,598,870,932.97
  5. Step 5: Solve for x
    x = 138,598,870,932.97/420,266.22
  6. Step 6: Final answer
    x = 329,788.27

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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.