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Finding the Fourth Proportional to 343,377.97, 515,140.76 and 115,696.22

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Solution

The fourth proportional to 343,377.97, 515,140.76 and 115,696.22 is: 173,569.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,377.97 : 515,140.76 = 115,696.22 : x
  2. Step 2: Convert to fraction form
    343,377.97/515,140.76 = 115,696.22/x
  3. Step 3: Cross multiply
    343,377.97x = 515,140.76 × 115,696.22
  4. Step 4: Simplify right side
    343,377.97x = 59,599,836,413.46
  5. Step 5: Solve for x
    x = 59,599,836,413.46/343,377.97
  6. Step 6: Final answer
    x = 173,569.19

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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.