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Finding the Fourth Proportional to 220,119.70, 330,179.55 and 79,860.10

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Solution

The fourth proportional to 220,119.70, 330,179.55 and 79,860.10 is: 119,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,119.70 : 330,179.55 = 79,860.10 : x
  2. Step 2: Convert to fraction form
    220,119.70/330,179.55 = 79,860.10/x
  3. Step 3: Cross multiply
    220,119.70x = 330,179.55 × 79,860.10
  4. Step 4: Simplify right side
    220,119.70x = 26,368,171,880.96
  5. Step 5: Solve for x
    x = 26,368,171,880.96/220,119.70
  6. Step 6: Final answer
    x = 119,790.15

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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.