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Finding the Fourth Proportional to 265,663.09, 398,377.27 and 76,080.48

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Solution

The fourth proportional to 265,663.09, 398,377.27 and 76,080.48 is: 114,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,663.09 : 398,377.27 = 76,080.48 : x
  2. Step 2: Convert to fraction form
    265,663.09/398,377.27 = 76,080.48/x
  3. Step 3: Cross multiply
    265,663.09x = 398,377.27 × 76,080.48
  4. Step 4: Simplify right side
    265,663.09x = 30,308,733,922.69
  5. Step 5: Solve for x
    x = 30,308,733,922.69/265,663.09
  6. Step 6: Final answer
    x = 114,087.11

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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.