Home / 330,836.90-495,271.20-218,643.80

Finding the Fourth Proportional to 330,836.90, 495,271.20 and 218,643.80

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Solution

The fourth proportional to 330,836.90, 495,271.20 and 218,643.80 is: 327,315.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,836.90 : 495,271.20 = 218,643.80 : x
  2. Step 2: Convert to fraction form
    330,836.90/495,271.20 = 218,643.80/x
  3. Step 3: Cross multiply
    330,836.90x = 495,271.20 × 218,643.80
  4. Step 4: Simplify right side
    330,836.90x = 108,287,977,198.56
  5. Step 5: Solve for x
    x = 108,287,977,198.56/330,836.90
  6. Step 6: Final answer
    x = 327,315.29

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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.