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Finding the Fourth Proportional to 318,350.54, 477,529.56 and 126,271.82

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Solution

The fourth proportional to 318,350.54, 477,529.56 and 126,271.82 is: 189,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,350.54 : 477,529.56 = 126,271.82 : x
  2. Step 2: Convert to fraction form
    318,350.54/477,529.56 = 126,271.82/x
  3. Step 3: Cross multiply
    318,350.54x = 477,529.56 × 126,271.82
  4. Step 4: Simplify right side
    318,350.54x = 60,298,526,645.00
  5. Step 5: Solve for x
    x = 60,298,526,645.00/318,350.54
  6. Step 6: Final answer
    x = 189,409.22

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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.