Home / 820,358.80-1,230,538.20-221,412.40

Finding the Fourth Proportional to 820,358.80, 1,230,538.20 and 221,412.40

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Solution

The fourth proportional to 820,358.80, 1,230,538.20 and 221,412.40 is: 332,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,358.80 : 1,230,538.20 = 221,412.40 : x
  2. Step 2: Convert to fraction form
    820,358.80/1,230,538.20 = 221,412.40/x
  3. Step 3: Cross multiply
    820,358.80x = 1,230,538.20 × 221,412.40
  4. Step 4: Simplify right side
    820,358.80x = 272,456,416,153.68
  5. Step 5: Solve for x
    x = 272,456,416,153.68/820,358.80
  6. Step 6: Final answer
    x = 332,118.60

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Similar ratio
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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.