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Finding the Fourth Proportional to 663,241.28, 995,055.71 and 213,952.23

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Solution

The fourth proportional to 663,241.28, 995,055.71 and 213,952.23 is: 320,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,241.28 : 995,055.71 = 213,952.23 : x
  2. Step 2: Convert to fraction form
    663,241.28/995,055.71 = 213,952.23/x
  3. Step 3: Cross multiply
    663,241.28x = 995,055.71 × 213,952.23
  4. Step 4: Simplify right side
    663,241.28x = 212,894,387,058.97
  5. Step 5: Solve for x
    x = 212,894,387,058.97/663,241.28
  6. Step 6: Final answer
    x = 320,990.86

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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.