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Finding the Fourth Proportional to 222,181.20, 333,320.40 and 109,915.20

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Solution

The fourth proportional to 222,181.20, 333,320.40 and 109,915.20 is: 164,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,181.20 : 333,320.40 = 109,915.20 : x
  2. Step 2: Convert to fraction form
    222,181.20/333,320.40 = 109,915.20/x
  3. Step 3: Cross multiply
    222,181.20x = 333,320.40 × 109,915.20
  4. Step 4: Simplify right side
    222,181.20x = 36,636,978,430.08
  5. Step 5: Solve for x
    x = 36,636,978,430.08/222,181.20
  6. Step 6: Final answer
    x = 164,896.84

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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.