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Finding the Fourth Proportional to 221,077.54, 305,020.65 and 125,570.98

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Solution

The fourth proportional to 221,077.54, 305,020.65 and 125,570.98 is: 173,250.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,077.54 : 305,020.65 = 125,570.98 : x
  2. Step 2: Convert to fraction form
    221,077.54/305,020.65 = 125,570.98/x
  3. Step 3: Cross multiply
    221,077.54x = 305,020.65 × 125,570.98
  4. Step 4: Simplify right side
    221,077.54x = 38,301,741,940.74
  5. Step 5: Solve for x
    x = 38,301,741,940.74/221,077.54
  6. Step 6: Final answer
    x = 173,250.26

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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.