Home / 213,381.72-320,120.20-80,263.08

Finding the Fourth Proportional to 213,381.72, 320,120.20 and 80,263.08

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Solution

The fourth proportional to 213,381.72, 320,120.20 and 80,263.08 is: 120,412.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,381.72 : 320,120.20 = 80,263.08 : x
  2. Step 2: Convert to fraction form
    213,381.72/320,120.20 = 80,263.08/x
  3. Step 3: Cross multiply
    213,381.72x = 320,120.20 × 80,263.08
  4. Step 4: Simplify right side
    213,381.72x = 25,693,833,222.22
  5. Step 5: Solve for x
    x = 25,693,833,222.22/213,381.72
  6. Step 6: Final answer
    x = 120,412.53

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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.