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Finding the Fourth Proportional to 196,839.84, 295,261.20 and 84,425.20

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Solution

The fourth proportional to 196,839.84, 295,261.20 and 84,425.20 is: 126,638.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,839.84 : 295,261.20 = 84,425.20 : x
  2. Step 2: Convert to fraction form
    196,839.84/295,261.20 = 84,425.20/x
  3. Step 3: Cross multiply
    196,839.84x = 295,261.20 × 84,425.20
  4. Step 4: Simplify right side
    196,839.84x = 24,927,485,862.24
  5. Step 5: Solve for x
    x = 24,927,485,862.24/196,839.84
  6. Step 6: Final answer
    x = 126,638.42

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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.