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Finding the Fourth Proportional to 236,751.25, 326,714.79 and 129,321.31

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Solution

The fourth proportional to 236,751.25, 326,714.79 and 129,321.31 is: 178,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,751.25 : 326,714.79 = 129,321.31 : x
  2. Step 2: Convert to fraction form
    236,751.25/326,714.79 = 129,321.31/x
  3. Step 3: Cross multiply
    236,751.25x = 326,714.79 × 129,321.31
  4. Step 4: Simplify right side
    236,751.25x = 42,251,184,639.17
  5. Step 5: Solve for x
    x = 42,251,184,639.17/236,751.25
  6. Step 6: Final answer
    x = 178,462.35

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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.