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Finding the Fourth Proportional to 307,676.14, 424,575.34 and 171,699.42

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Solution

The fourth proportional to 307,676.14, 424,575.34 and 171,699.42 is: 236,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,676.14 : 424,575.34 = 171,699.42 : x
  2. Step 2: Convert to fraction form
    307,676.14/424,575.34 = 171,699.42/x
  3. Step 3: Cross multiply
    307,676.14x = 424,575.34 × 171,699.42
  4. Step 4: Simplify right side
    307,676.14x = 72,899,339,624.30
  5. Step 5: Solve for x
    x = 72,899,339,624.30/307,676.14
  6. Step 6: Final answer
    x = 236,935.30

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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.