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Finding the Fourth Proportional to 201,359.65, 302,018.67 and 68,236.45

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Solution

The fourth proportional to 201,359.65, 302,018.67 and 68,236.45 is: 102,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,359.65 : 302,018.67 = 68,236.45 : x
  2. Step 2: Convert to fraction form
    201,359.65/302,018.67 = 68,236.45/x
  3. Step 3: Cross multiply
    201,359.65x = 302,018.67 × 68,236.45
  4. Step 4: Simplify right side
    201,359.65x = 20,608,681,874.52
  5. Step 5: Solve for x
    x = 20,608,681,874.52/201,359.65
  6. Step 6: Final answer
    x = 102,347.62

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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.