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Finding the Fourth Proportional to 194,418.40, 291,627.60 and 69,743.20

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Solution

The fourth proportional to 194,418.40, 291,627.60 and 69,743.20 is: 104,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,418.40 : 291,627.60 = 69,743.20 : x
  2. Step 2: Convert to fraction form
    194,418.40/291,627.60 = 69,743.20/x
  3. Step 3: Cross multiply
    194,418.40x = 291,627.60 × 69,743.20
  4. Step 4: Simplify right side
    194,418.40x = 20,339,042,032.32
  5. Step 5: Solve for x
    x = 20,339,042,032.32/194,418.40
  6. Step 6: Final answer
    x = 104,614.80

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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.