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Finding the Fourth Proportional to 278,344.34, 418,007.56 and 207,286.28

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Solution

The fourth proportional to 278,344.34, 418,007.56 and 207,286.28 is: 311,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,344.34 : 418,007.56 = 207,286.28 : x
  2. Step 2: Convert to fraction form
    278,344.34/418,007.56 = 207,286.28/x
  3. Step 3: Cross multiply
    278,344.34x = 418,007.56 × 207,286.28
  4. Step 4: Simplify right side
    278,344.34x = 86,647,232,124.28
  5. Step 5: Solve for x
    x = 86,647,232,124.28/278,344.34
  6. Step 6: Final answer
    x = 311,295.11

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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.