Home / 213,799.80-320,600.86-120,305.54

Finding the Fourth Proportional to 213,799.80, 320,600.86 and 120,305.54

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Solution

The fourth proportional to 213,799.80, 320,600.86 and 120,305.54 is: 180,402.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,799.80 : 320,600.86 = 120,305.54 : x
  2. Step 2: Convert to fraction form
    213,799.80/320,600.86 = 120,305.54/x
  3. Step 3: Cross multiply
    213,799.80x = 320,600.86 × 120,305.54
  4. Step 4: Simplify right side
    213,799.80x = 38,570,059,586.76
  5. Step 5: Solve for x
    x = 38,570,059,586.76/213,799.80
  6. Step 6: Final answer
    x = 180,402.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.