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Finding the Fourth Proportional to 201,395.20, 302,083.20 and 68,262.40

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Solution

The fourth proportional to 201,395.20, 302,083.20 and 68,262.40 is: 102,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,395.20 : 302,083.20 = 68,262.40 : x
  2. Step 2: Convert to fraction form
    201,395.20/302,083.20 = 68,262.40/x
  3. Step 3: Cross multiply
    201,395.20x = 302,083.20 × 68,262.40
  4. Step 4: Simplify right side
    201,395.20x = 20,620,924,231.68
  5. Step 5: Solve for x
    x = 20,620,924,231.68/201,395.20
  6. Step 6: Final answer
    x = 102,390.35

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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.