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Finding the Fourth Proportional to 438,481.78, 657,764.48 and 122,937.77

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Solution

The fourth proportional to 438,481.78, 657,764.48 and 122,937.77 is: 184,418.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,481.78 : 657,764.48 = 122,937.77 : x
  2. Step 2: Convert to fraction form
    438,481.78/657,764.48 = 122,937.77/x
  3. Step 3: Cross multiply
    438,481.78x = 657,764.48 × 122,937.77
  4. Step 4: Simplify right side
    438,481.78x = 80,864,098,356.41
  5. Step 5: Solve for x
    x = 80,864,098,356.41/438,481.78
  6. Step 6: Final answer
    x = 184,418.38

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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.