Home / 330,019.20-455,427-179,116.56

Finding the Fourth Proportional to 330,019.20, 455,427 and 179,116.56

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Solution

The fourth proportional to 330,019.20, 455,427 and 179,116.56 is: 247,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,019.20 : 455,427 = 179,116.56 : x
  2. Step 2: Convert to fraction form
    330,019.20/455,427 = 179,116.56/x
  3. Step 3: Cross multiply
    330,019.20x = 455,427 × 179,116.56
  4. Step 4: Simplify right side
    330,019.20x = 81,574,517,571.12
  5. Step 5: Solve for x
    x = 81,574,517,571.12/330,019.20
  6. Step 6: Final answer
    x = 247,181.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.