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Finding the Fourth Proportional to 281,839.70, 421,775.40 and 197,202.80

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Solution

The fourth proportional to 281,839.70, 421,775.40 and 197,202.80 is: 295,115.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,839.70 : 421,775.40 = 197,202.80 : x
  2. Step 2: Convert to fraction form
    281,839.70/421,775.40 = 197,202.80/x
  3. Step 3: Cross multiply
    281,839.70x = 421,775.40 × 197,202.80
  4. Step 4: Simplify right side
    281,839.70x = 83,175,289,851.12
  5. Step 5: Solve for x
    x = 83,175,289,851.12/281,839.70
  6. Step 6: Final answer
    x = 295,115.59

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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.