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Finding the Fourth Proportional to 309,910.88, 427,680.19 and 173,942.10

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Solution

The fourth proportional to 309,910.88, 427,680.19 and 173,942.10 is: 240,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,910.88 : 427,680.19 = 173,942.10 : x
  2. Step 2: Convert to fraction form
    309,910.88/427,680.19 = 173,942.10/x
  3. Step 3: Cross multiply
    309,910.88x = 427,680.19 × 173,942.10
  4. Step 4: Simplify right side
    309,910.88x = 74,391,590,576.49
  5. Step 5: Solve for x
    x = 74,391,590,576.49/309,910.88
  6. Step 6: Final answer
    x = 240,041.88

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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.