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Finding the Fourth Proportional to 207,425.60, 311,138.40 and 198,324.80

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Solution

The fourth proportional to 207,425.60, 311,138.40 and 198,324.80 is: 297,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,425.60 : 311,138.40 = 198,324.80 : x
  2. Step 2: Convert to fraction form
    207,425.60/311,138.40 = 198,324.80/x
  3. Step 3: Cross multiply
    207,425.60x = 311,138.40 × 198,324.80
  4. Step 4: Simplify right side
    207,425.60x = 61,706,460,952.32
  5. Step 5: Solve for x
    x = 61,706,460,952.32/207,425.60
  6. Step 6: Final answer
    x = 297,487.20

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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.