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Finding the Fourth Proportional to 318,744.40, 477,425.40 and 263,448.40

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Solution

The fourth proportional to 318,744.40, 477,425.40 and 263,448.40 is: 394,601.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,744.40 : 477,425.40 = 263,448.40 : x
  2. Step 2: Convert to fraction form
    318,744.40/477,425.40 = 263,448.40/x
  3. Step 3: Cross multiply
    318,744.40x = 477,425.40 × 263,448.40
  4. Step 4: Simplify right side
    318,744.40x = 125,776,957,749.36
  5. Step 5: Solve for x
    x = 125,776,957,749.36/318,744.40
  6. Step 6: Final answer
    x = 394,601.31

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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.