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Finding the Fourth Proportional to 378,052.70, 567,079.05 and 339,998.90

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Solution

The fourth proportional to 378,052.70, 567,079.05 and 339,998.90 is: 509,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,052.70 : 567,079.05 = 339,998.90 : x
  2. Step 2: Convert to fraction form
    378,052.70/567,079.05 = 339,998.90/x
  3. Step 3: Cross multiply
    378,052.70x = 567,079.05 × 339,998.90
  4. Step 4: Simplify right side
    378,052.70x = 192,806,253,213.05
  5. Step 5: Solve for x
    x = 192,806,253,213.05/378,052.70
  6. Step 6: Final answer
    x = 509,998.35

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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.