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Finding the Fourth Proportional to 215,470.89, 323,157.74 and 82,303.65

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Solution

The fourth proportional to 215,470.89, 323,157.74 and 82,303.65 is: 123,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,470.89 : 323,157.74 = 82,303.65 : x
  2. Step 2: Convert to fraction form
    215,470.89/323,157.74 = 82,303.65/x
  3. Step 3: Cross multiply
    215,470.89x = 323,157.74 × 82,303.65
  4. Step 4: Simplify right side
    215,470.89x = 26,597,061,116.23
  5. Step 5: Solve for x
    x = 26,597,061,116.23/215,470.89
  6. Step 6: Final answer
    x = 123,436.91

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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.