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Finding the Fourth Proportional to 236,886.64, 326,904.42 and 129,458.32

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Solution

The fourth proportional to 236,886.64, 326,904.42 and 129,458.32 is: 178,652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,886.64 : 326,904.42 = 129,458.32 : x
  2. Step 2: Convert to fraction form
    236,886.64/326,904.42 = 129,458.32/x
  3. Step 3: Cross multiply
    236,886.64x = 326,904.42 × 129,458.32
  4. Step 4: Simplify right side
    236,886.64x = 42,320,497,013.77
  5. Step 5: Solve for x
    x = 42,320,497,013.77/236,886.64
  6. Step 6: Final answer
    x = 178,652.95

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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.