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Finding the Fourth Proportional to 656,685.78, 985,028.85 and 158,049.78

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Solution

The fourth proportional to 656,685.78, 985,028.85 and 158,049.78 is: 237,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,685.78 : 985,028.85 = 158,049.78 : x
  2. Step 2: Convert to fraction form
    656,685.78/985,028.85 = 158,049.78/x
  3. Step 3: Cross multiply
    656,685.78x = 985,028.85 × 158,049.78
  4. Step 4: Simplify right side
    656,685.78x = 155,683,593,036.15
  5. Step 5: Solve for x
    x = 155,683,593,036.15/656,685.78
  6. Step 6: Final answer
    x = 237,074.71

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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.