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Finding the Fourth Proportional to 284,147.20, 426,451.20 and 274,931.20

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Solution

The fourth proportional to 284,147.20, 426,451.20 and 274,931.20 is: 412,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,147.20 : 426,451.20 = 274,931.20 : x
  2. Step 2: Convert to fraction form
    284,147.20/426,451.20 = 274,931.20/x
  3. Step 3: Cross multiply
    284,147.20x = 426,451.20 × 274,931.20
  4. Step 4: Simplify right side
    284,147.20x = 117,244,740,157.44
  5. Step 5: Solve for x
    x = 117,244,740,157.44/284,147.20
  6. Step 6: Final answer
    x = 412,619.73

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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.