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Finding the Fourth Proportional to 279,408.36, 418,937.22 and 203,534.04

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Solution

The fourth proportional to 279,408.36, 418,937.22 and 203,534.04 is: 305,173.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,408.36 : 418,937.22 = 203,534.04 : x
  2. Step 2: Convert to fraction form
    279,408.36/418,937.22 = 203,534.04/x
  3. Step 3: Cross multiply
    279,408.36x = 418,937.22 × 203,534.04
  4. Step 4: Simplify right side
    279,408.36x = 85,267,984,892.97
  5. Step 5: Solve for x
    x = 85,267,984,892.97/279,408.36
  6. Step 6: Final answer
    x = 305,173.35

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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.