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Finding the Fourth Proportional to 536,436.40, 804,142.60 and 199,386.80

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Solution

The fourth proportional to 536,436.40, 804,142.60 and 199,386.80 is: 298,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,436.40 : 804,142.60 = 199,386.80 : x
  2. Step 2: Convert to fraction form
    536,436.40/804,142.60 = 199,386.80/x
  3. Step 3: Cross multiply
    536,436.40x = 804,142.60 × 199,386.80
  4. Step 4: Simplify right side
    536,436.40x = 160,335,419,757.68
  5. Step 5: Solve for x
    x = 160,335,419,757.68/536,436.40
  6. Step 6: Final answer
    x = 298,889.90

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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.