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Finding the Fourth Proportional to 194,418.60, 291,627.90 and 69,743.40

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Solution

The fourth proportional to 194,418.60, 291,627.90 and 69,743.40 is: 104,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,418.60 : 291,627.90 = 69,743.40 : x
  2. Step 2: Convert to fraction form
    194,418.60/291,627.90 = 69,743.40/x
  3. Step 3: Cross multiply
    194,418.60x = 291,627.90 × 69,743.40
  4. Step 4: Simplify right side
    194,418.60x = 20,339,121,280.86
  5. Step 5: Solve for x
    x = 20,339,121,280.86/194,418.60
  6. Step 6: Final answer
    x = 104,615.10

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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.