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Finding the Fourth Proportional to 347,691.80, 479,732.45 and 196,788.80

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Solution

The fourth proportional to 347,691.80, 479,732.45 and 196,788.80 is: 271,522.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,691.80 : 479,732.45 = 196,788.80 : x
  2. Step 2: Convert to fraction form
    347,691.80/479,732.45 = 196,788.80/x
  3. Step 3: Cross multiply
    347,691.80x = 479,732.45 × 196,788.80
  4. Step 4: Simplify right side
    347,691.80x = 94,405,973,371.95
  5. Step 5: Solve for x
    x = 94,405,973,371.95/347,691.80
  6. Step 6: Final answer
    x = 271,522.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.