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Finding the Fourth Proportional to 236,908.98, 326,933.60 and 129,478.98

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Solution

The fourth proportional to 236,908.98, 326,933.60 and 129,478.98 is: 178,680.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,908.98 : 326,933.60 = 129,478.98 : x
  2. Step 2: Convert to fraction form
    236,908.98/326,933.60 = 129,478.98/x
  3. Step 3: Cross multiply
    236,908.98x = 326,933.60 × 129,478.98
  4. Step 4: Simplify right side
    236,908.98x = 42,331,029,379.43
  5. Step 5: Solve for x
    x = 42,331,029,379.43/236,908.98
  6. Step 6: Final answer
    x = 178,680.56

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1.5x scale

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.