Home / 320,542.20-442,209.24-193,145.40

Finding the Fourth Proportional to 320,542.20, 442,209.24 and 193,145.40

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Solution

The fourth proportional to 320,542.20, 442,209.24 and 193,145.40 is: 266,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,542.20 : 442,209.24 = 193,145.40 : x
  2. Step 2: Convert to fraction form
    320,542.20/442,209.24 = 193,145.40/x
  3. Step 3: Cross multiply
    320,542.20x = 442,209.24 × 193,145.40
  4. Step 4: Simplify right side
    320,542.20x = 85,410,680,543.50
  5. Step 5: Solve for x
    x = 85,410,680,543.50/320,542.20
  6. Step 6: Final answer
    x = 266,456.90

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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.