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Finding the Fourth Proportional to 221,968.76, 332,101.20 and 127,244.36

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Solution

The fourth proportional to 221,968.76, 332,101.20 and 127,244.36 is: 190,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,968.76 : 332,101.20 = 127,244.36 : x
  2. Step 2: Convert to fraction form
    221,968.76/332,101.20 = 127,244.36/x
  3. Step 3: Cross multiply
    221,968.76x = 332,101.20 × 127,244.36
  4. Step 4: Simplify right side
    221,968.76x = 42,258,004,649.23
  5. Step 5: Solve for x
    x = 42,258,004,649.23/221,968.76
  6. Step 6: Final answer
    x = 190,378.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.