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Finding the Fourth Proportional to 263,354.40, 394,448.40 and 216,698.40

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Solution

The fourth proportional to 263,354.40, 394,448.40 and 216,698.40 is: 324,567.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,354.40 : 394,448.40 = 216,698.40 : x
  2. Step 2: Convert to fraction form
    263,354.40/394,448.40 = 216,698.40/x
  3. Step 3: Cross multiply
    263,354.40x = 394,448.40 × 216,698.40
  4. Step 4: Simplify right side
    263,354.40x = 85,476,337,162.56
  5. Step 5: Solve for x
    x = 85,476,337,162.56/263,354.40
  6. Step 6: Final answer
    x = 324,567.72

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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.