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Finding the Fourth Proportional to 289,771, 399,885.42 and 168,996.04

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Solution

The fourth proportional to 289,771, 399,885.42 and 168,996.04 is: 233,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,771 : 399,885.42 = 168,996.04 : x
  2. Step 2: Convert to fraction form
    289,771/399,885.42 = 168,996.04/x
  3. Step 3: Cross multiply
    289,771x = 399,885.42 × 168,996.04
  4. Step 4: Simplify right side
    289,771x = 67,579,052,433.74
  5. Step 5: Solve for x
    x = 67,579,052,433.74/289,771
  6. Step 6: Final answer
    x = 233,215.38

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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.