Home / 420,229.18-579,943.68-238,957.96

Finding the Fourth Proportional to 420,229.18, 579,943.68 and 238,957.96

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Solution

The fourth proportional to 420,229.18, 579,943.68 and 238,957.96 is: 329,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,229.18 : 579,943.68 = 238,957.96 : x
  2. Step 2: Convert to fraction form
    420,229.18/579,943.68 = 238,957.96/x
  3. Step 3: Cross multiply
    420,229.18x = 579,943.68 × 238,957.96
  4. Step 4: Simplify right side
    420,229.18x = 138,582,158,687.69
  5. Step 5: Solve for x
    x = 138,582,158,687.69/420,229.18
  6. Step 6: Final answer
    x = 329,777.57

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1.5x scale

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.