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Finding the Fourth Proportional to 238,413.31, 329,028.85 and 136,470.79

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Solution

The fourth proportional to 238,413.31, 329,028.85 and 136,470.79 is: 188,340.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,413.31 : 329,028.85 = 136,470.79 : x
  2. Step 2: Convert to fraction form
    238,413.31/329,028.85 = 136,470.79/x
  3. Step 3: Cross multiply
    238,413.31x = 329,028.85 × 136,470.79
  4. Step 4: Simplify right side
    238,413.31x = 44,902,827,092.29
  5. Step 5: Solve for x
    x = 44,902,827,092.29/238,413.31
  6. Step 6: Final answer
    x = 188,340.27

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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.