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Finding the Fourth Proportional to 311,042.40, 465,872.40 and 269,570.40

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Solution

The fourth proportional to 311,042.40, 465,872.40 and 269,570.40 is: 403,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,042.40 : 465,872.40 = 269,570.40 : x
  2. Step 2: Convert to fraction form
    311,042.40/465,872.40 = 269,570.40/x
  3. Step 3: Cross multiply
    311,042.40x = 465,872.40 × 269,570.40
  4. Step 4: Simplify right side
    311,042.40x = 125,585,409,216.96
  5. Step 5: Solve for x
    x = 125,585,409,216.96/311,042.40
  6. Step 6: Final answer
    x = 403,756.56

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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.