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Finding the Fourth Proportional to 220,433.69, 330,744.15 and 120,477.11

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Solution

The fourth proportional to 220,433.69, 330,744.15 and 120,477.11 is: 180,766.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,433.69 : 330,744.15 = 120,477.11 : x
  2. Step 2: Convert to fraction form
    220,433.69/330,744.15 = 120,477.11/x
  3. Step 3: Cross multiply
    220,433.69x = 330,744.15 × 120,477.11
  4. Step 4: Simplify right side
    220,433.69x = 39,847,097,687.69
  5. Step 5: Solve for x
    x = 39,847,097,687.69/220,433.69
  6. Step 6: Final answer
    x = 180,766.82

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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.