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Finding the Fourth Proportional to 236,458.38, 326,311.38 and 129,028.08

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Solution

The fourth proportional to 236,458.38, 326,311.38 and 129,028.08 is: 178,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,458.38 : 326,311.38 = 129,028.08 : x
  2. Step 2: Convert to fraction form
    236,458.38/326,311.38 = 129,028.08/x
  3. Step 3: Cross multiply
    236,458.38x = 326,311.38 × 129,028.08
  4. Step 4: Simplify right side
    236,458.38x = 42,103,330,843.55
  5. Step 5: Solve for x
    x = 42,103,330,843.55/236,458.38
  6. Step 6: Final answer
    x = 178,058.10

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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.