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Finding the Fourth Proportional to 329,990.72, 455,387.52 and 179,087.68

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Solution

The fourth proportional to 329,990.72, 455,387.52 and 179,087.68 is: 247,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,990.72 : 455,387.52 = 179,087.68 : x
  2. Step 2: Convert to fraction form
    329,990.72/455,387.52 = 179,087.68/x
  3. Step 3: Cross multiply
    329,990.72x = 455,387.52 × 179,087.68
  4. Step 4: Simplify right side
    329,990.72x = 81,554,294,457.75
  5. Step 5: Solve for x
    x = 81,554,294,457.75/329,990.72
  6. Step 6: Final answer
    x = 247,141.18

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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.