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Finding the Fourth Proportional to 547,538.70, 821,308.05 and 148,241.10

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Solution

The fourth proportional to 547,538.70, 821,308.05 and 148,241.10 is: 222,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,538.70 : 821,308.05 = 148,241.10 : x
  2. Step 2: Convert to fraction form
    547,538.70/821,308.05 = 148,241.10/x
  3. Step 3: Cross multiply
    547,538.70x = 821,308.05 × 148,241.10
  4. Step 4: Simplify right side
    547,538.70x = 121,751,608,770.86
  5. Step 5: Solve for x
    x = 121,751,608,770.86/547,538.70
  6. Step 6: Final answer
    x = 222,361.65

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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.