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Finding the Fourth Proportional to 221,076.54, 305,019.27 and 125,569.98

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Solution

The fourth proportional to 221,076.54, 305,019.27 and 125,569.98 is: 173,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,076.54 : 305,019.27 = 125,569.98 : x
  2. Step 2: Convert to fraction form
    221,076.54/305,019.27 = 125,569.98/x
  3. Step 3: Cross multiply
    221,076.54x = 305,019.27 × 125,569.98
  4. Step 4: Simplify right side
    221,076.54x = 38,301,263,633.51
  5. Step 5: Solve for x
    x = 38,301,263,633.51/221,076.54
  6. Step 6: Final answer
    x = 173,248.88

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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.