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Finding the Fourth Proportional to 323,645.58, 485,416.35 and 136,632.78

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Solution

The fourth proportional to 323,645.58, 485,416.35 and 136,632.78 is: 204,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,645.58 : 485,416.35 = 136,632.78 : x
  2. Step 2: Convert to fraction form
    323,645.58/485,416.35 = 136,632.78/x
  3. Step 3: Cross multiply
    323,645.58x = 485,416.35 × 136,632.78
  4. Step 4: Simplify right side
    323,645.58x = 66,323,785,357.95
  5. Step 5: Solve for x
    x = 66,323,785,357.95/323,645.58
  6. Step 6: Final answer
    x = 204,927.21

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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.