Home / 828,100.20-1,242,209.36-220,885.11

Finding the Fourth Proportional to 828,100.20, 1,242,209.36 and 220,885.11

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Solution

The fourth proportional to 828,100.20, 1,242,209.36 and 220,885.11 is: 331,343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,100.20 : 1,242,209.36 = 220,885.11 : x
  2. Step 2: Convert to fraction form
    828,100.20/1,242,209.36 = 220,885.11/x
  3. Step 3: Cross multiply
    828,100.20x = 1,242,209.36 × 220,885.11
  4. Step 4: Simplify right side
    828,100.20x = 274,385,550,022.20
  5. Step 5: Solve for x
    x = 274,385,550,022.20/828,100.20
  6. Step 6: Final answer
    x = 331,343.42

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Double scale
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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.