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Finding the Fourth Proportional to 329,990.16, 455,387.88 and 179,087.28

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Solution

The fourth proportional to 329,990.16, 455,387.88 and 179,087.28 is: 247,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,990.16 : 455,387.88 = 179,087.28 : x
  2. Step 2: Convert to fraction form
    329,990.16/455,387.88 = 179,087.28/x
  3. Step 3: Cross multiply
    329,990.16x = 455,387.88 × 179,087.28
  4. Step 4: Simplify right side
    329,990.16x = 81,554,176,774.17
  5. Step 5: Solve for x
    x = 81,554,176,774.17/329,990.16
  6. Step 6: Final answer
    x = 247,141.24

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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.