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Finding the Fourth Proportional to 236,761.60, 355,126.20 and 76,835.20

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Solution

The fourth proportional to 236,761.60, 355,126.20 and 76,835.20 is: 115,247.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,761.60 : 355,126.20 = 76,835.20 : x
  2. Step 2: Convert to fraction form
    236,761.60/355,126.20 = 76,835.20/x
  3. Step 3: Cross multiply
    236,761.60x = 355,126.20 × 76,835.20
  4. Step 4: Simplify right side
    236,761.60x = 27,286,192,602.24
  5. Step 5: Solve for x
    x = 27,286,192,602.24/236,761.60
  6. Step 6: Final answer
    x = 115,247.54

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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.