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Finding the Fourth Proportional to 265,909.09, 398,865.11 and 66,229.49

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Solution

The fourth proportional to 265,909.09, 398,865.11 and 66,229.49 is: 99,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,909.09 : 398,865.11 = 66,229.49 : x
  2. Step 2: Convert to fraction form
    265,909.09/398,865.11 = 66,229.49/x
  3. Step 3: Cross multiply
    265,909.09x = 398,865.11 × 66,229.49
  4. Step 4: Simplify right side
    265,909.09x = 26,416,632,814.09
  5. Step 5: Solve for x
    x = 26,416,632,814.09/265,909.09
  6. Step 6: Final answer
    x = 99,344.60

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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.