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Finding the Fourth Proportional to 267,768.58, 401,641.08 and 90,274.90

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Solution

The fourth proportional to 267,768.58, 401,641.08 and 90,274.90 is: 135,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,768.58 : 401,641.08 = 90,274.90 : x
  2. Step 2: Convert to fraction form
    267,768.58/401,641.08 = 90,274.90/x
  3. Step 3: Cross multiply
    267,768.58x = 401,641.08 × 90,274.90
  4. Step 4: Simplify right side
    267,768.58x = 36,258,108,332.89
  5. Step 5: Solve for x
    x = 36,258,108,332.89/267,768.58
  6. Step 6: Final answer
    x = 135,408.38

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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.