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Finding the Fourth Proportional to 321,702.49, 482,627.87 and 111,340.43

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Solution

The fourth proportional to 321,702.49, 482,627.87 and 111,340.43 is: 167,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,702.49 : 482,627.87 = 111,340.43 : x
  2. Step 2: Convert to fraction form
    321,702.49/482,627.87 = 111,340.43/x
  3. Step 3: Cross multiply
    321,702.49x = 482,627.87 × 111,340.43
  4. Step 4: Simplify right side
    321,702.49x = 53,735,994,575.78
  5. Step 5: Solve for x
    x = 53,735,994,575.78/321,702.49
  6. Step 6: Final answer
    x = 167,036.30

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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.