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Finding the Fourth Proportional to 329,990.31, 455,386.86 and 179,087.31

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Solution

The fourth proportional to 329,990.31, 455,386.86 and 179,087.31 is: 247,140.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,990.31 : 455,386.86 = 179,087.31 : x
  2. Step 2: Convert to fraction form
    329,990.31/455,386.86 = 179,087.31/x
  3. Step 3: Cross multiply
    329,990.31x = 455,386.86 × 179,087.31
  4. Step 4: Simplify right side
    329,990.31x = 81,554,007,766.75
  5. Step 5: Solve for x
    x = 81,554,007,766.75/329,990.31
  6. Step 6: Final answer
    x = 247,140.61

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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.