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Finding the Fourth Proportional to 267,669.97, 401,565.56 and 90,172.14

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Solution

The fourth proportional to 267,669.97, 401,565.56 and 90,172.14 is: 135,278.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,669.97 : 401,565.56 = 90,172.14 : x
  2. Step 2: Convert to fraction form
    267,669.97/401,565.56 = 90,172.14/x
  3. Step 3: Cross multiply
    267,669.97x = 401,565.56 × 90,172.14
  4. Step 4: Simplify right side
    267,669.97x = 36,210,025,895.50
  5. Step 5: Solve for x
    x = 36,210,025,895.50/267,669.97
  6. Step 6: Final answer
    x = 135,278.63

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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.