Home / 215,519.10-323,278.65-82,403.70

Finding the Fourth Proportional to 215,519.10, 323,278.65 and 82,403.70

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Solution

The fourth proportional to 215,519.10, 323,278.65 and 82,403.70 is: 123,605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,519.10 : 323,278.65 = 82,403.70 : x
  2. Step 2: Convert to fraction form
    215,519.10/323,278.65 = 82,403.70/x
  3. Step 3: Cross multiply
    215,519.10x = 323,278.65 × 82,403.70
  4. Step 4: Simplify right side
    215,519.10x = 26,639,356,891.01
  5. Step 5: Solve for x
    x = 26,639,356,891.01/215,519.10
  6. Step 6: Final answer
    x = 123,605.55

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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.