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Finding the Fourth Proportional to 220,464.40, 330,466.20 and 120,470.80

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Solution

The fourth proportional to 220,464.40, 330,466.20 and 120,470.80 is: 180,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,464.40 : 330,466.20 = 120,470.80 : x
  2. Step 2: Convert to fraction form
    220,464.40/330,466.20 = 120,470.80/x
  3. Step 3: Cross multiply
    220,464.40x = 330,466.20 × 120,470.80
  4. Step 4: Simplify right side
    220,464.40x = 39,811,527,486.96
  5. Step 5: Solve for x
    x = 39,811,527,486.96/220,464.40
  6. Step 6: Final answer
    x = 180,580.30

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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.