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Finding the Fourth Proportional to 339,401.67, 509,213.09 and 161,885.58

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Solution

The fourth proportional to 339,401.67, 509,213.09 and 161,885.58 is: 242,881.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,401.67 : 509,213.09 = 161,885.58 : x
  2. Step 2: Convert to fraction form
    339,401.67/509,213.09 = 161,885.58/x
  3. Step 3: Cross multiply
    339,401.67x = 509,213.09 × 161,885.58
  4. Step 4: Simplify right side
    339,401.67x = 82,434,256,418.24
  5. Step 5: Solve for x
    x = 82,434,256,418.24/339,401.67
  6. Step 6: Final answer
    x = 242,881.12

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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.