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Finding the Fourth Proportional to 220,103.40, 330,155.10 and 218,029.80

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Solution

The fourth proportional to 220,103.40, 330,155.10 and 218,029.80 is: 327,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,103.40 : 330,155.10 = 218,029.80 : x
  2. Step 2: Convert to fraction form
    220,103.40/330,155.10 = 218,029.80/x
  3. Step 3: Cross multiply
    220,103.40x = 330,155.10 × 218,029.80
  4. Step 4: Simplify right side
    220,103.40x = 71,983,650,421.98
  5. Step 5: Solve for x
    x = 71,983,650,421.98/220,103.40
  6. Step 6: Final answer
    x = 327,044.70

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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.