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Finding the Fourth Proportional to 330,808.54, 456,619.75 and 187,663.74

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Solution

The fourth proportional to 330,808.54, 456,619.75 and 187,663.74 is: 259,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,808.54 : 456,619.75 = 187,663.74 : x
  2. Step 2: Convert to fraction form
    330,808.54/456,619.75 = 187,663.74/x
  3. Step 3: Cross multiply
    330,808.54x = 456,619.75 × 187,663.74
  4. Step 4: Simplify right side
    330,808.54x = 85,690,970,042.87
  5. Step 5: Solve for x
    x = 85,690,970,042.87/330,808.54
  6. Step 6: Final answer
    x = 259,034.94

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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.