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Finding the Fourth Proportional to 267,629.91, 401,445.54 and 90,261.51

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Solution

The fourth proportional to 267,629.91, 401,445.54 and 90,261.51 is: 135,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,629.91 : 401,445.54 = 90,261.51 : x
  2. Step 2: Convert to fraction form
    267,629.91/401,445.54 = 90,261.51/x
  3. Step 3: Cross multiply
    267,629.91x = 401,445.54 × 90,261.51
  4. Step 4: Simplify right side
    267,629.91x = 36,235,080,623.17
  5. Step 5: Solve for x
    x = 36,235,080,623.17/267,629.91
  6. Step 6: Final answer
    x = 135,392.49

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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.