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Finding the Fourth Proportional to 240,857.81, 361,199.45 and 80,885.88

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Solution

The fourth proportional to 240,857.81, 361,199.45 and 80,885.88 is: 121,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,857.81 : 361,199.45 = 80,885.88 : x
  2. Step 2: Convert to fraction form
    240,857.81/361,199.45 = 80,885.88/x
  3. Step 3: Cross multiply
    240,857.81x = 361,199.45 × 80,885.88
  4. Step 4: Simplify right side
    240,857.81x = 29,215,934,964.34
  5. Step 5: Solve for x
    x = 29,215,934,964.34/240,857.81
  6. Step 6: Final answer
    x = 121,299.52

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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.