Home / 393,933.20-591,048.68-154,218.40

Finding the Fourth Proportional to 393,933.20, 591,048.68 and 154,218.40

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Solution

The fourth proportional to 393,933.20, 591,048.68 and 154,218.40 is: 231,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,933.20 : 591,048.68 = 154,218.40 : x
  2. Step 2: Convert to fraction form
    393,933.20/591,048.68 = 154,218.40/x
  3. Step 3: Cross multiply
    393,933.20x = 591,048.68 × 154,218.40
  4. Step 4: Simplify right side
    393,933.20x = 91,150,581,751.71
  5. Step 5: Solve for x
    x = 91,150,581,751.71/393,933.20
  6. Step 6: Final answer
    x = 231,385.88

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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.