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Finding the Fourth Proportional to 265,609.80, 397,758.60 and 197,979.66

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Solution

The fourth proportional to 265,609.80, 397,758.60 and 197,979.66 is: 296,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,609.80 : 397,758.60 = 197,979.66 : x
  2. Step 2: Convert to fraction form
    265,609.80/397,758.60 = 197,979.66/x
  3. Step 3: Cross multiply
    265,609.80x = 397,758.60 × 197,979.66
  4. Step 4: Simplify right side
    265,609.80x = 78,748,112,390.08
  5. Step 5: Solve for x
    x = 78,748,112,390.08/265,609.80
  6. Step 6: Final answer
    x = 296,480.45

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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.