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Finding the Fourth Proportional to 489,512.72, 734,339.15 and 216,263.27

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Solution

The fourth proportional to 489,512.72, 734,339.15 and 216,263.27 is: 324,425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,512.72 : 734,339.15 = 216,263.27 : x
  2. Step 2: Convert to fraction form
    489,512.72/734,339.15 = 216,263.27/x
  3. Step 3: Cross multiply
    489,512.72x = 734,339.15 × 216,263.27
  4. Step 4: Simplify right side
    489,512.72x = 158,810,581,115.01
  5. Step 5: Solve for x
    x = 158,810,581,115.01/489,512.72
  6. Step 6: Final answer
    x = 324,425.86

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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.