Home / 420,032.68-579,622.30-238,719.44

Finding the Fourth Proportional to 420,032.68, 579,622.30 and 238,719.44

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Solution

The fourth proportional to 420,032.68, 579,622.30 and 238,719.44 is: 329,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,032.68 : 579,622.30 = 238,719.44 : x
  2. Step 2: Convert to fraction form
    420,032.68/579,622.30 = 238,719.44/x
  3. Step 3: Cross multiply
    420,032.68x = 579,622.30 × 238,719.44
  4. Step 4: Simplify right side
    420,032.68x = 138,367,109,673.92
  5. Step 5: Solve for x
    x = 138,367,109,673.92/420,032.68
  6. Step 6: Final answer
    x = 329,419.87

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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.