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Finding the Fourth Proportional to 236,659.32, 326,592 and 129,230.64

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Solution

The fourth proportional to 236,659.32, 326,592 and 129,230.64 is: 178,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,659.32 : 326,592 = 129,230.64 : x
  2. Step 2: Convert to fraction form
    236,659.32/326,592 = 129,230.64/x
  3. Step 3: Cross multiply
    236,659.32x = 326,592 × 129,230.64
  4. Step 4: Simplify right side
    236,659.32x = 42,205,693,178.88
  5. Step 5: Solve for x
    x = 42,205,693,178.88/236,659.32
  6. Step 6: Final answer
    x = 178,339.45

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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.