Home / 420,230.16-579,945.04-238,958.96

Finding the Fourth Proportional to 420,230.16, 579,945.04 and 238,958.96

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Solution

The fourth proportional to 420,230.16, 579,945.04 and 238,958.96 is: 329,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,230.16 : 579,945.04 = 238,958.96 : x
  2. Step 2: Convert to fraction form
    420,230.16/579,945.04 = 238,958.96/x
  3. Step 3: Cross multiply
    420,230.16x = 579,945.04 × 238,958.96
  4. Step 4: Simplify right side
    420,230.16x = 138,583,063,615.56
  5. Step 5: Solve for x
    x = 138,583,063,615.56/420,230.16
  6. Step 6: Final answer
    x = 329,778.96

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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.