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Finding the Fourth Proportional to 268,314.64, 402,221.81 and 90,697.43

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Solution

The fourth proportional to 268,314.64, 402,221.81 and 90,697.43 is: 135,961.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,314.64 : 402,221.81 = 90,697.43 : x
  2. Step 2: Convert to fraction form
    268,314.64/402,221.81 = 90,697.43/x
  3. Step 3: Cross multiply
    268,314.64x = 402,221.81 × 90,697.43
  4. Step 4: Simplify right side
    268,314.64x = 36,480,485,689.25
  5. Step 5: Solve for x
    x = 36,480,485,689.25/268,314.64
  6. Step 6: Final answer
    x = 135,961.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.