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Finding the Fourth Proportional to 447,394.61, 617,395.41 and 243,449.57

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Solution

The fourth proportional to 447,394.61, 617,395.41 and 243,449.57 is: 335,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,394.61 : 617,395.41 = 243,449.57 : x
  2. Step 2: Convert to fraction form
    447,394.61/617,395.41 = 243,449.57/x
  3. Step 3: Cross multiply
    447,394.61x = 617,395.41 × 243,449.57
  4. Step 4: Simplify right side
    447,394.61x = 150,304,647,084.47
  5. Step 5: Solve for x
    x = 150,304,647,084.47/447,394.61
  6. Step 6: Final answer
    x = 335,955.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.