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Finding the Fourth Proportional to 321,702.20, 482,553.30 and 222,169.40

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Solution

The fourth proportional to 321,702.20, 482,553.30 and 222,169.40 is: 333,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,702.20 : 482,553.30 = 222,169.40 : x
  2. Step 2: Convert to fraction form
    321,702.20/482,553.30 = 222,169.40/x
  3. Step 3: Cross multiply
    321,702.20x = 482,553.30 × 222,169.40
  4. Step 4: Simplify right side
    321,702.20x = 107,208,577,129.02
  5. Step 5: Solve for x
    x = 107,208,577,129.02/321,702.20
  6. Step 6: Final answer
    x = 333,254.10

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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.