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Finding the Fourth Proportional to 225,511.78, 310,991.52 and 134,853.07

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Solution

The fourth proportional to 225,511.78, 310,991.52 and 134,853.07 is: 185,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,511.78 : 310,991.52 = 134,853.07 : x
  2. Step 2: Convert to fraction form
    225,511.78/310,991.52 = 134,853.07/x
  3. Step 3: Cross multiply
    225,511.78x = 310,991.52 × 134,853.07
  4. Step 4: Simplify right side
    225,511.78x = 41,938,161,215.97
  5. Step 5: Solve for x
    x = 41,938,161,215.97/225,511.78
  6. Step 6: Final answer
    x = 185,968.83

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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.