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Finding the Fourth Proportional to 225,058.58, 310,619.03 and 129,620.53

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Solution

The fourth proportional to 225,058.58, 310,619.03 and 129,620.53 is: 178,898.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,058.58 : 310,619.03 = 129,620.53 : x
  2. Step 2: Convert to fraction form
    225,058.58/310,619.03 = 129,620.53/x
  3. Step 3: Cross multiply
    225,058.58x = 310,619.03 × 129,620.53
  4. Step 4: Simplify right side
    225,058.58x = 40,262,603,296.69
  5. Step 5: Solve for x
    x = 40,262,603,296.69/225,058.58
  6. Step 6: Final answer
    x = 178,898.33

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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.