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Finding the Fourth Proportional to 236,867, 326,871.08 and 129,437.68

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Solution

The fourth proportional to 236,867, 326,871.08 and 129,437.68 is: 178,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,867 : 326,871.08 = 129,437.68 : x
  2. Step 2: Convert to fraction form
    236,867/326,871.08 = 129,437.68/x
  3. Step 3: Cross multiply
    236,867x = 326,871.08 × 129,437.68
  4. Step 4: Simplify right side
    236,867x = 42,309,434,254.29
  5. Step 5: Solve for x
    x = 42,309,434,254.29/236,867
  6. Step 6: Final answer
    x = 178,621.06

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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.