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Finding the Fourth Proportional to 219,701.40, 330,256.80 and 204,100.80

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Solution

The fourth proportional to 219,701.40, 330,256.80 and 204,100.80 is: 306,805.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,701.40 : 330,256.80 = 204,100.80 : x
  2. Step 2: Convert to fraction form
    219,701.40/330,256.80 = 204,100.80/x
  3. Step 3: Cross multiply
    219,701.40x = 330,256.80 × 204,100.80
  4. Step 4: Simplify right side
    219,701.40x = 67,405,677,085.44
  5. Step 5: Solve for x
    x = 67,405,677,085.44/219,701.40
  6. Step 6: Final answer
    x = 306,805.86

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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.