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Finding the Fourth Proportional to 311,367.20, 465,344.80 and 227,304.40

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Solution

The fourth proportional to 311,367.20, 465,344.80 and 227,304.40 is: 339,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,367.20 : 465,344.80 = 227,304.40 : x
  2. Step 2: Convert to fraction form
    311,367.20/465,344.80 = 227,304.40/x
  3. Step 3: Cross multiply
    311,367.20x = 465,344.80 × 227,304.40
  4. Step 4: Simplify right side
    311,367.20x = 105,774,920,557.12
  5. Step 5: Solve for x
    x = 105,774,920,557.12/311,367.20
  6. Step 6: Final answer
    x = 339,711.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.