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Finding the Fourth Proportional to 220,901.40, 304,845.42 and 125,409.72

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Solution

The fourth proportional to 220,901.40, 304,845.42 and 125,409.72 is: 173,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,901.40 : 304,845.42 = 125,409.72 : x
  2. Step 2: Convert to fraction form
    220,901.40/304,845.42 = 125,409.72/x
  3. Step 3: Cross multiply
    220,901.40x = 304,845.42 × 125,409.72
  4. Step 4: Simplify right side
    220,901.40x = 38,230,578,765.48
  5. Step 5: Solve for x
    x = 38,230,578,765.48/220,901.40
  6. Step 6: Final answer
    x = 173,066.26

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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.