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Finding the Fourth Proportional to 215,611.65, 323,059.93 and 131,116.22

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Solution

The fourth proportional to 215,611.65, 323,059.93 and 131,116.22 is: 196,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,611.65 : 323,059.93 = 131,116.22 : x
  2. Step 2: Convert to fraction form
    215,611.65/323,059.93 = 131,116.22/x
  3. Step 3: Cross multiply
    215,611.65x = 323,059.93 × 131,116.22
  4. Step 4: Simplify right side
    215,611.65x = 42,358,396,855.06
  5. Step 5: Solve for x
    x = 42,358,396,855.06/215,611.65
  6. Step 6: Final answer
    x = 196,456.90

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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.