Home / 209,819.60-314,729.40-131,022.80

Finding the Fourth Proportional to 209,819.60, 314,729.40 and 131,022.80

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Solution

The fourth proportional to 209,819.60, 314,729.40 and 131,022.80 is: 196,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,819.60 : 314,729.40 = 131,022.80 : x
  2. Step 2: Convert to fraction form
    209,819.60/314,729.40 = 131,022.80/x
  3. Step 3: Cross multiply
    209,819.60x = 314,729.40 × 131,022.80
  4. Step 4: Simplify right side
    209,819.60x = 41,236,727,230.32
  5. Step 5: Solve for x
    x = 41,236,727,230.32/209,819.60
  6. Step 6: Final answer
    x = 196,534.20

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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.