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Finding the Fourth Proportional to 268,814.70, 403,258.77 and 91,274.04

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Solution

The fourth proportional to 268,814.70, 403,258.77 and 91,274.04 is: 136,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,814.70 : 403,258.77 = 91,274.04 : x
  2. Step 2: Convert to fraction form
    268,814.70/403,258.77 = 91,274.04/x
  3. Step 3: Cross multiply
    268,814.70x = 403,258.77 × 91,274.04
  4. Step 4: Simplify right side
    268,814.70x = 36,807,057,103.33
  5. Step 5: Solve for x
    x = 36,807,057,103.33/268,814.70
  6. Step 6: Final answer
    x = 136,923.53

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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.