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Finding the Fourth Proportional to 304,936.50, 420,812.37 and 185,704.50

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Solution

The fourth proportional to 304,936.50, 420,812.37 and 185,704.50 is: 256,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,936.50 : 420,812.37 = 185,704.50 : x
  2. Step 2: Convert to fraction form
    304,936.50/420,812.37 = 185,704.50/x
  3. Step 3: Cross multiply
    304,936.50x = 420,812.37 × 185,704.50
  4. Step 4: Simplify right side
    304,936.50x = 78,146,750,764.67
  5. Step 5: Solve for x
    x = 78,146,750,764.67/304,936.50
  6. Step 6: Final answer
    x = 256,272.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.