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Finding the Fourth Proportional to 319,689.63, 479,534.31 and 95,049.09

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Solution

The fourth proportional to 319,689.63, 479,534.31 and 95,049.09 is: 142,573.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,689.63 : 479,534.31 = 95,049.09 : x
  2. Step 2: Convert to fraction form
    319,689.63/479,534.31 = 95,049.09/x
  3. Step 3: Cross multiply
    319,689.63x = 479,534.31 × 95,049.09
  4. Step 4: Simplify right side
    319,689.63x = 45,579,299,789.28
  5. Step 5: Solve for x
    x = 45,579,299,789.28/319,689.63
  6. Step 6: Final answer
    x = 142,573.59

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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.