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Finding the Fourth Proportional to 239,044.84, 358,344.51 and 81,165.31

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Solution

The fourth proportional to 239,044.84, 358,344.51 and 81,165.31 is: 121,672.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,044.84 : 358,344.51 = 81,165.31 : x
  2. Step 2: Convert to fraction form
    239,044.84/358,344.51 = 81,165.31/x
  3. Step 3: Cross multiply
    239,044.84x = 358,344.51 × 81,165.31
  4. Step 4: Simplify right side
    239,044.84x = 29,085,143,240.95
  5. Step 5: Solve for x
    x = 29,085,143,240.95/239,044.84
  6. Step 6: Final answer
    x = 121,672.33

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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.