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Finding the Fourth Proportional to 318,346.54, 477,523.56 and 126,267.81

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Solution

The fourth proportional to 318,346.54, 477,523.56 and 126,267.81 is: 189,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,346.54 : 477,523.56 = 126,267.81 : x
  2. Step 2: Convert to fraction form
    318,346.54/477,523.56 = 126,267.81/x
  3. Step 3: Cross multiply
    318,346.54x = 477,523.56 × 126,267.81
  4. Step 4: Simplify right side
    318,346.54x = 60,295,854,144.60
  5. Step 5: Solve for x
    x = 60,295,854,144.60/318,346.54
  6. Step 6: Final answer
    x = 189,403.20

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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.