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Finding the Fourth Proportional to 438,791.03, 658,212.06 and 123,272.54

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Solution

The fourth proportional to 438,791.03, 658,212.06 and 123,272.54 is: 184,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,791.03 : 658,212.06 = 123,272.54 : x
  2. Step 2: Convert to fraction form
    438,791.03/658,212.06 = 123,272.54/x
  3. Step 3: Cross multiply
    438,791.03x = 658,212.06 × 123,272.54
  4. Step 4: Simplify right side
    438,791.03x = 81,139,472,494.83
  5. Step 5: Solve for x
    x = 81,139,472,494.83/438,791.03
  6. Step 6: Final answer
    x = 184,915.98

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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.