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Finding the Fourth Proportional to 236,251.60, 326,015.22 and 128,820.76

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Solution

The fourth proportional to 236,251.60, 326,015.22 and 128,820.76 is: 177,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,251.60 : 326,015.22 = 128,820.76 : x
  2. Step 2: Convert to fraction form
    236,251.60/326,015.22 = 128,820.76/x
  3. Step 3: Cross multiply
    236,251.60x = 326,015.22 × 128,820.76
  4. Step 4: Simplify right side
    236,251.60x = 41,997,528,411.97
  5. Step 5: Solve for x
    x = 41,997,528,411.97/236,251.60
  6. Step 6: Final answer
    x = 177,766.11

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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.