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Finding the Fourth Proportional to 222,490.40, 333,735.60 and 213,159.20

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Solution

The fourth proportional to 222,490.40, 333,735.60 and 213,159.20 is: 319,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,490.40 : 333,735.60 = 213,159.20 : x
  2. Step 2: Convert to fraction form
    222,490.40/333,735.60 = 213,159.20/x
  3. Step 3: Cross multiply
    222,490.40x = 333,735.60 × 213,159.20
  4. Step 4: Simplify right side
    222,490.40x = 71,138,813,507.52
  5. Step 5: Solve for x
    x = 71,138,813,507.52/222,490.40
  6. Step 6: Final answer
    x = 319,738.80

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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.