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Finding the Fourth Proportional to 318,616.40, 477,233.40 and 263,320.40

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Solution

The fourth proportional to 318,616.40, 477,233.40 and 263,320.40 is: 394,409.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,616.40 : 477,233.40 = 263,320.40 : x
  2. Step 2: Convert to fraction form
    318,616.40/477,233.40 = 263,320.40/x
  3. Step 3: Cross multiply
    318,616.40x = 477,233.40 × 263,320.40
  4. Step 4: Simplify right side
    318,616.40x = 125,665,289,781.36
  5. Step 5: Solve for x
    x = 125,665,289,781.36/318,616.40
  6. Step 6: Final answer
    x = 394,409.36

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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.