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Finding the Fourth Proportional to 268,239.60, 401,703.30 and 127,834.20

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Solution

The fourth proportional to 268,239.60, 401,703.30 and 127,834.20 is: 191,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,239.60 : 401,703.30 = 127,834.20 : x
  2. Step 2: Convert to fraction form
    268,239.60/401,703.30 = 127,834.20/x
  3. Step 3: Cross multiply
    268,239.60x = 401,703.30 × 127,834.20
  4. Step 4: Simplify right side
    268,239.60x = 51,351,419,992.86
  5. Step 5: Solve for x
    x = 51,351,419,992.86/268,239.60
  6. Step 6: Final answer
    x = 191,438.62

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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.