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Finding the Fourth Proportional to 640,131.92, 960,198.20 and 166,816.08

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Solution

The fourth proportional to 640,131.92, 960,198.20 and 166,816.08 is: 250,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,131.92 : 960,198.20 = 166,816.08 : x
  2. Step 2: Convert to fraction form
    640,131.92/960,198.20 = 166,816.08/x
  3. Step 3: Cross multiply
    640,131.92x = 960,198.20 × 166,816.08
  4. Step 4: Simplify right side
    640,131.92x = 160,176,499,747.06
  5. Step 5: Solve for x
    x = 160,176,499,747.06/640,131.92
  6. Step 6: Final answer
    x = 250,224.20

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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.