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Finding the Fourth Proportional to 310,612.80, 465,919.20 and 204,324.60

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Solution

The fourth proportional to 310,612.80, 465,919.20 and 204,324.60 is: 306,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,612.80 : 465,919.20 = 204,324.60 : x
  2. Step 2: Convert to fraction form
    310,612.80/465,919.20 = 204,324.60/x
  3. Step 3: Cross multiply
    310,612.80x = 465,919.20 × 204,324.60
  4. Step 4: Simplify right side
    310,612.80x = 95,198,754,172.32
  5. Step 5: Solve for x
    x = 95,198,754,172.32/310,612.80
  6. Step 6: Final answer
    x = 306,486.90

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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.