Home / 279,969.40-419,954.10-209,110.60

Finding the Fourth Proportional to 279,969.40, 419,954.10 and 209,110.60

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Solution

The fourth proportional to 279,969.40, 419,954.10 and 209,110.60 is: 313,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,969.40 : 419,954.10 = 209,110.60 : x
  2. Step 2: Convert to fraction form
    279,969.40/419,954.10 = 209,110.60/x
  3. Step 3: Cross multiply
    279,969.40x = 419,954.10 × 209,110.60
  4. Step 4: Simplify right side
    279,969.40x = 87,816,853,823.46
  5. Step 5: Solve for x
    x = 87,816,853,823.46/279,969.40
  6. Step 6: Final answer
    x = 313,665.90

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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.