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Finding the Fourth Proportional to 403,796.60, 605,694.90 and 254,205.80

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Solution

The fourth proportional to 403,796.60, 605,694.90 and 254,205.80 is: 381,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,796.60 : 605,694.90 = 254,205.80 : x
  2. Step 2: Convert to fraction form
    403,796.60/605,694.90 = 254,205.80/x
  3. Step 3: Cross multiply
    403,796.60x = 605,694.90 × 254,205.80
  4. Step 4: Simplify right side
    403,796.60x = 153,971,156,610.42
  5. Step 5: Solve for x
    x = 153,971,156,610.42/403,796.60
  6. Step 6: Final answer
    x = 381,308.70

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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.