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Finding the Fourth Proportional to 267,739.60, 401,587.64 and 90,242.80

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Solution

The fourth proportional to 267,739.60, 401,587.64 and 90,242.80 is: 135,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,739.60 : 401,587.64 = 90,242.80 : x
  2. Step 2: Convert to fraction form
    267,739.60/401,587.64 = 90,242.80/x
  3. Step 3: Cross multiply
    267,739.60x = 401,587.64 × 90,242.80
  4. Step 4: Simplify right side
    267,739.60x = 36,240,393,078.99
  5. Step 5: Solve for x
    x = 36,240,393,078.99/267,739.60
  6. Step 6: Final answer
    x = 135,356.87

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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.