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Finding the Fourth Proportional to 329,989.88, 455,391.50 and 179,086.88

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Solution

The fourth proportional to 329,989.88, 455,391.50 and 179,086.88 is: 247,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,989.88 : 455,391.50 = 179,086.88 : x
  2. Step 2: Convert to fraction form
    329,989.88/455,391.50 = 179,086.88/x
  3. Step 3: Cross multiply
    329,989.88x = 455,391.50 × 179,086.88
  4. Step 4: Simplify right side
    329,989.88x = 81,554,639,741.13
  5. Step 5: Solve for x
    x = 81,554,639,741.13/329,989.88
  6. Step 6: Final answer
    x = 247,142.85

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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.