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Finding the Fourth Proportional to 265,188.48, 397,743.20 and 87,696.42

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Solution

The fourth proportional to 265,188.48, 397,743.20 and 87,696.42 is: 131,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,188.48 : 397,743.20 = 87,696.42 : x
  2. Step 2: Convert to fraction form
    265,188.48/397,743.20 = 87,696.42/x
  3. Step 3: Cross multiply
    265,188.48x = 397,743.20 × 87,696.42
  4. Step 4: Simplify right side
    265,188.48x = 34,880,654,719.34
  5. Step 5: Solve for x
    x = 34,880,654,719.34/265,188.48
  6. Step 6: Final answer
    x = 131,531.56

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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.