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Finding the Fourth Proportional to 221,058.56, 305,051.28 and 125,564.96

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Solution

The fourth proportional to 221,058.56, 305,051.28 and 125,564.96 is: 173,274.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,058.56 : 305,051.28 = 125,564.96 : x
  2. Step 2: Convert to fraction form
    221,058.56/305,051.28 = 125,564.96/x
  3. Step 3: Cross multiply
    221,058.56x = 305,051.28 × 125,564.96
  4. Step 4: Simplify right side
    221,058.56x = 38,303,751,771.15
  5. Step 5: Solve for x
    x = 38,303,751,771.15/221,058.56
  6. Step 6: Final answer
    x = 173,274.23

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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.