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Finding the Fourth Proportional to 487,880.28, 731,910.33 and 221,660.82

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Solution

The fourth proportional to 487,880.28, 731,910.33 and 221,660.82 is: 332,532.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,880.28 : 731,910.33 = 221,660.82 : x
  2. Step 2: Convert to fraction form
    487,880.28/731,910.33 = 221,660.82/x
  3. Step 3: Cross multiply
    487,880.28x = 731,910.33 × 221,660.82
  4. Step 4: Simplify right side
    487,880.28x = 162,235,843,914.27
  5. Step 5: Solve for x
    x = 162,235,843,914.27/487,880.28
  6. Step 6: Final answer
    x = 332,532.08

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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.