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Finding the Fourth Proportional to 329,574.08, 494,380.40 and 127,171.28

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Solution

The fourth proportional to 329,574.08, 494,380.40 and 127,171.28 is: 190,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,574.08 : 494,380.40 = 127,171.28 : x
  2. Step 2: Convert to fraction form
    329,574.08/494,380.40 = 127,171.28/x
  3. Step 3: Cross multiply
    329,574.08x = 494,380.40 × 127,171.28
  4. Step 4: Simplify right side
    329,574.08x = 62,870,988,274.91
  5. Step 5: Solve for x
    x = 62,870,988,274.91/329,574.08
  6. Step 6: Final answer
    x = 190,764.36

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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.