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Finding the Fourth Proportional to 487,601.28, 731,692.53 and 217,708.44

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Solution

The fourth proportional to 487,601.28, 731,692.53 and 217,708.44 is: 326,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,601.28 : 731,692.53 = 217,708.44 : x
  2. Step 2: Convert to fraction form
    487,601.28/731,692.53 = 217,708.44/x
  3. Step 3: Cross multiply
    487,601.28x = 731,692.53 × 217,708.44
  4. Step 4: Simplify right side
    487,601.28x = 159,295,639,265.95
  5. Step 5: Solve for x
    x = 159,295,639,265.95/487,601.28
  6. Step 6: Final answer
    x = 326,692.41

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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.