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Finding the Fourth Proportional to 265,855.70, 398,858.88 and 108,197.30

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Solution

The fourth proportional to 265,855.70, 398,858.88 and 108,197.30 is: 162,326.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,855.70 : 398,858.88 = 108,197.30 : x
  2. Step 2: Convert to fraction form
    265,855.70/398,858.88 = 108,197.30/x
  3. Step 3: Cross multiply
    265,855.70x = 398,858.88 × 108,197.30
  4. Step 4: Simplify right side
    265,855.70x = 43,155,453,897.02
  5. Step 5: Solve for x
    x = 43,155,453,897.02/265,855.70
  6. Step 6: Final answer
    x = 162,326.61

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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.