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Finding the Fourth Proportional to 267,697.76, 401,583.69 and 90,255.51

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Solution

The fourth proportional to 267,697.76, 401,583.69 and 90,255.51 is: 135,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,697.76 : 401,583.69 = 90,255.51 : x
  2. Step 2: Convert to fraction form
    267,697.76/401,583.69 = 90,255.51/x
  3. Step 3: Cross multiply
    267,697.76x = 401,583.69 × 90,255.51
  4. Step 4: Simplify right side
    267,697.76x = 36,245,140,748.63
  5. Step 5: Solve for x
    x = 36,245,140,748.63/267,697.76
  6. Step 6: Final answer
    x = 135,395.76

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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.