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Finding the Fourth Proportional to 279,435.60, 419,153.40 and 222,354.90

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Solution

The fourth proportional to 279,435.60, 419,153.40 and 222,354.90 is: 333,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,435.60 : 419,153.40 = 222,354.90 : x
  2. Step 2: Convert to fraction form
    279,435.60/419,153.40 = 222,354.90/x
  3. Step 3: Cross multiply
    279,435.60x = 419,153.40 × 222,354.90
  4. Step 4: Simplify right side
    279,435.60x = 93,200,812,341.66
  5. Step 5: Solve for x
    x = 93,200,812,341.66/279,435.60
  6. Step 6: Final answer
    x = 333,532.35

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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.