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Finding the Fourth Proportional to 236,468.12, 326,323.31 and 129,039.98

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Solution

The fourth proportional to 236,468.12, 326,323.31 and 129,039.98 is: 178,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,468.12 : 326,323.31 = 129,039.98 : x
  2. Step 2: Convert to fraction form
    236,468.12/326,323.31 = 129,039.98/x
  3. Step 3: Cross multiply
    236,468.12x = 326,323.31 × 129,039.98
  4. Step 4: Simplify right side
    236,468.12x = 42,108,751,764.32
  5. Step 5: Solve for x
    x = 42,108,751,764.32/236,468.12
  6. Step 6: Final answer
    x = 178,073.70

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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.