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Finding the Fourth Proportional to 215,519.80, 323,279.70 and 57,764.20

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Solution

The fourth proportional to 215,519.80, 323,279.70 and 57,764.20 is: 86,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,519.80 : 323,279.70 = 57,764.20 : x
  2. Step 2: Convert to fraction form
    215,519.80/323,279.70 = 57,764.20/x
  3. Step 3: Cross multiply
    215,519.80x = 323,279.70 × 57,764.20
  4. Step 4: Simplify right side
    215,519.80x = 18,673,993,246.74
  5. Step 5: Solve for x
    x = 18,673,993,246.74/215,519.80
  6. Step 6: Final answer
    x = 86,646.30

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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.