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Finding the Fourth Proportional to 485,640.03, 728,044.68 and 186,335.41

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Solution

The fourth proportional to 485,640.03, 728,044.68 and 186,335.41 is: 279,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,640.03 : 728,044.68 = 186,335.41 : x
  2. Step 2: Convert to fraction form
    485,640.03/728,044.68 = 186,335.41/x
  3. Step 3: Cross multiply
    485,640.03x = 728,044.68 × 186,335.41
  4. Step 4: Simplify right side
    485,640.03x = 135,660,501,194.33
  5. Step 5: Solve for x
    x = 135,660,501,194.33/485,640.03
  6. Step 6: Final answer
    x = 279,343.74

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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.