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Finding the Fourth Proportional to 263,147.60, 394,721.40 and 97,000.40

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Solution

The fourth proportional to 263,147.60, 394,721.40 and 97,000.40 is: 145,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,147.60 : 394,721.40 = 97,000.40 : x
  2. Step 2: Convert to fraction form
    263,147.60/394,721.40 = 97,000.40/x
  3. Step 3: Cross multiply
    263,147.60x = 394,721.40 × 97,000.40
  4. Step 4: Simplify right side
    263,147.60x = 38,288,133,688.56
  5. Step 5: Solve for x
    x = 38,288,133,688.56/263,147.60
  6. Step 6: Final answer
    x = 145,500.60

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Double scale
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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.