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Finding the Fourth Proportional to 340,414.60, 510,621.90 and 269,912.20

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Solution

The fourth proportional to 340,414.60, 510,621.90 and 269,912.20 is: 404,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,414.60 : 510,621.90 = 269,912.20 : x
  2. Step 2: Convert to fraction form
    340,414.60/510,621.90 = 269,912.20/x
  3. Step 3: Cross multiply
    340,414.60x = 510,621.90 × 269,912.20
  4. Step 4: Simplify right side
    340,414.60x = 137,823,080,397.18
  5. Step 5: Solve for x
    x = 137,823,080,397.18/340,414.60
  6. Step 6: Final answer
    x = 404,868.30

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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.