Home / 220,340.90-330,519.18-70,561.72

Finding the Fourth Proportional to 220,340.90, 330,519.18 and 70,561.72

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Solution

The fourth proportional to 220,340.90, 330,519.18 and 70,561.72 is: 105,845.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,340.90 : 330,519.18 = 70,561.72 : x
  2. Step 2: Convert to fraction form
    220,340.90/330,519.18 = 70,561.72/x
  3. Step 3: Cross multiply
    220,340.90x = 330,519.18 × 70,561.72
  4. Step 4: Simplify right side
    220,340.90x = 23,322,001,833.79
  5. Step 5: Solve for x
    x = 23,322,001,833.79/220,340.90
  6. Step 6: Final answer
    x = 105,845.09

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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.