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Finding the Fourth Proportional to 329,865.91, 455,213.05 and 178,959.67

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Solution

The fourth proportional to 329,865.91, 455,213.05 and 178,959.67 is: 246,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,865.91 : 455,213.05 = 178,959.67 : x
  2. Step 2: Convert to fraction form
    329,865.91/455,213.05 = 178,959.67/x
  3. Step 3: Cross multiply
    329,865.91x = 455,213.05 × 178,959.67
  4. Step 4: Simplify right side
    329,865.91x = 81,464,777,207.69
  5. Step 5: Solve for x
    x = 81,464,777,207.69/329,865.91
  6. Step 6: Final answer
    x = 246,963.31

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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.