Home / 330,721.20-496,276.20-120,380.40

Finding the Fourth Proportional to 330,721.20, 496,276.20 and 120,380.40

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Solution

The fourth proportional to 330,721.20, 496,276.20 and 120,380.40 is: 180,641.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,721.20 : 496,276.20 = 120,380.40 : x
  2. Step 2: Convert to fraction form
    330,721.20/496,276.20 = 120,380.40/x
  3. Step 3: Cross multiply
    330,721.20x = 496,276.20 × 120,380.40
  4. Step 4: Simplify right side
    330,721.20x = 59,741,927,466.48
  5. Step 5: Solve for x
    x = 59,741,927,466.48/330,721.20
  6. Step 6: Final answer
    x = 180,641.36

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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.