Home / 420,228.18-579,942.30-238,956.96

Finding the Fourth Proportional to 420,228.18, 579,942.30 and 238,956.96

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Solution

The fourth proportional to 420,228.18, 579,942.30 and 238,956.96 is: 329,776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,228.18 : 579,942.30 = 238,956.96 : x
  2. Step 2: Convert to fraction form
    420,228.18/579,942.30 = 238,956.96/x
  3. Step 3: Cross multiply
    420,228.18x = 579,942.30 × 238,956.96
  4. Step 4: Simplify right side
    420,228.18x = 138,581,248,983.41
  5. Step 5: Solve for x
    x = 138,581,248,983.41/420,228.18
  6. Step 6: Final answer
    x = 329,776.19

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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.