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Finding the Fourth Proportional to 512,911.80, 769,367.70 and 158,034.60

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Solution

The fourth proportional to 512,911.80, 769,367.70 and 158,034.60 is: 237,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,911.80 : 769,367.70 = 158,034.60 : x
  2. Step 2: Convert to fraction form
    512,911.80/769,367.70 = 158,034.60/x
  3. Step 3: Cross multiply
    512,911.80x = 769,367.70 × 158,034.60
  4. Step 4: Simplify right side
    512,911.80x = 121,586,716,722.42
  5. Step 5: Solve for x
    x = 121,586,716,722.42/512,911.80
  6. Step 6: Final answer
    x = 237,051.90

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Similar ratio
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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.