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Finding the Fourth Proportional to 265,119.96, 397,636.96 and 85,196.88

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Solution

The fourth proportional to 265,119.96, 397,636.96 and 85,196.88 is: 127,781.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,119.96 : 397,636.96 = 85,196.88 : x
  2. Step 2: Convert to fraction form
    265,119.96/397,636.96 = 85,196.88/x
  3. Step 3: Cross multiply
    265,119.96x = 397,636.96 × 85,196.88
  4. Step 4: Simplify right side
    265,119.96x = 33,877,428,364.68
  5. Step 5: Solve for x
    x = 33,877,428,364.68/265,119.96
  6. Step 6: Final answer
    x = 127,781.51

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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.