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Finding the Fourth Proportional to 489,310.88, 734,071.88 and 147,725.95

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Solution

The fourth proportional to 489,310.88, 734,071.88 and 147,725.95 is: 221,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,310.88 : 734,071.88 = 147,725.95 : x
  2. Step 2: Convert to fraction form
    489,310.88/734,071.88 = 147,725.95/x
  3. Step 3: Cross multiply
    489,310.88x = 734,071.88 × 147,725.95
  4. Step 4: Simplify right side
    489,310.88x = 108,441,464,375.42
  5. Step 5: Solve for x
    x = 108,441,464,375.42/489,310.88
  6. Step 6: Final answer
    x = 221,620.79

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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.