Home / 320,540.70-442,207.17-193,143.90

Finding the Fourth Proportional to 320,540.70, 442,207.17 and 193,143.90

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Solution

The fourth proportional to 320,540.70, 442,207.17 and 193,143.90 is: 266,454.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,540.70 : 442,207.17 = 193,143.90 : x
  2. Step 2: Convert to fraction form
    320,540.70/442,207.17 = 193,143.90/x
  3. Step 3: Cross multiply
    320,540.70x = 442,207.17 × 193,143.90
  4. Step 4: Simplify right side
    320,540.70x = 85,409,617,421.76
  5. Step 5: Solve for x
    x = 85,409,617,421.76/320,540.70
  6. Step 6: Final answer
    x = 266,454.83

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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.