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Finding the Fourth Proportional to 236,279.90, 326,060.34 and 128,852

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Solution

The fourth proportional to 236,279.90, 326,060.34 and 128,852 is: 177,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,279.90 : 326,060.34 = 128,852 : x
  2. Step 2: Convert to fraction form
    236,279.90/326,060.34 = 128,852/x
  3. Step 3: Cross multiply
    236,279.90x = 326,060.34 × 128,852
  4. Step 4: Simplify right side
    236,279.90x = 42,013,526,929.68
  5. Step 5: Solve for x
    x = 42,013,526,929.68/236,279.90
  6. Step 6: Final answer
    x = 177,812.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.