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Finding the Fourth Proportional to 201,310.90, 302,004.45 and 66,382.72

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Solution

The fourth proportional to 201,310.90, 302,004.45 and 66,382.72 is: 99,586.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,310.90 : 302,004.45 = 66,382.72 : x
  2. Step 2: Convert to fraction form
    201,310.90/302,004.45 = 66,382.72/x
  3. Step 3: Cross multiply
    201,310.90x = 302,004.45 × 66,382.72
  4. Step 4: Simplify right side
    201,310.90x = 20,047,876,843.10
  5. Step 5: Solve for x
    x = 20,047,876,843.10/201,310.90
  6. Step 6: Final answer
    x = 99,586.64

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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.