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Finding the Fourth Proportional to 225,058.08, 310,618.34 and 129,620.03

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Solution

The fourth proportional to 225,058.08, 310,618.34 and 129,620.03 is: 178,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,058.08 : 310,618.34 = 129,620.03 : x
  2. Step 2: Convert to fraction form
    225,058.08/310,618.34 = 129,620.03/x
  3. Step 3: Cross multiply
    225,058.08x = 310,618.34 × 129,620.03
  4. Step 4: Simplify right side
    225,058.08x = 40,262,358,549.35
  5. Step 5: Solve for x
    x = 40,262,358,549.35/225,058.08
  6. Step 6: Final answer
    x = 178,897.64

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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.