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Finding the Fourth Proportional to 329,791.91, 455,112.07 and 178,888.91

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Solution

The fourth proportional to 329,791.91, 455,112.07 and 178,888.91 is: 246,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,791.91 : 455,112.07 = 178,888.91 : x
  2. Step 2: Convert to fraction form
    329,791.91/455,112.07 = 178,888.91/x
  3. Step 3: Cross multiply
    329,791.91x = 455,112.07 × 178,888.91
  4. Step 4: Simplify right side
    329,791.91x = 81,414,499,407.36
  5. Step 5: Solve for x
    x = 81,414,499,407.36/329,791.91
  6. Step 6: Final answer
    x = 246,866.28

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1.5x scale

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.