Home / 215,821.20-323,731.80-165,997.20

Finding the Fourth Proportional to 215,821.20, 323,731.80 and 165,997.20

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Solution

The fourth proportional to 215,821.20, 323,731.80 and 165,997.20 is: 248,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,821.20 : 323,731.80 = 165,997.20 : x
  2. Step 2: Convert to fraction form
    215,821.20/323,731.80 = 165,997.20/x
  3. Step 3: Cross multiply
    215,821.20x = 323,731.80 × 165,997.20
  4. Step 4: Simplify right side
    215,821.20x = 53,738,572,350.96
  5. Step 5: Solve for x
    x = 53,738,572,350.96/215,821.20
  6. Step 6: Final answer
    x = 248,995.80

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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.