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Finding the Fourth Proportional to 220,911.84, 304,866.72 and 125,422.56

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Solution

The fourth proportional to 220,911.84, 304,866.72 and 125,422.56 is: 173,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,911.84 : 304,866.72 = 125,422.56 : x
  2. Step 2: Convert to fraction form
    220,911.84/304,866.72 = 125,422.56/x
  3. Step 3: Cross multiply
    220,911.84x = 304,866.72 × 125,422.56
  4. Step 4: Simplify right side
    220,911.84x = 38,237,164,481.20
  5. Step 5: Solve for x
    x = 38,237,164,481.20/220,911.84
  6. Step 6: Final answer
    x = 173,087.89

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1.5x scale

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.