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Finding the Fourth Proportional to 267,889.73, 401,555.13 and 90,335.69

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Solution

The fourth proportional to 267,889.73, 401,555.13 and 90,335.69 is: 135,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,889.73 : 401,555.13 = 90,335.69 : x
  2. Step 2: Convert to fraction form
    267,889.73/401,555.13 = 90,335.69/x
  3. Step 3: Cross multiply
    267,889.73x = 401,555.13 × 90,335.69
  4. Step 4: Simplify right side
    267,889.73x = 36,274,759,741.59
  5. Step 5: Solve for x
    x = 36,274,759,741.59/267,889.73
  6. Step 6: Final answer
    x = 135,409.30

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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.