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Finding the Fourth Proportional to 318,029.82, 438,862.59 and 174,789.97

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Solution

The fourth proportional to 318,029.82, 438,862.59 and 174,789.97 is: 241,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,029.82 : 438,862.59 = 174,789.97 : x
  2. Step 2: Convert to fraction form
    318,029.82/438,862.59 = 174,789.97/x
  3. Step 3: Cross multiply
    318,029.82x = 438,862.59 × 174,789.97
  4. Step 4: Simplify right side
    318,029.82x = 76,708,778,940.22
  5. Step 5: Solve for x
    x = 76,708,778,940.22/318,029.82
  6. Step 6: Final answer
    x = 241,199.96

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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.