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Finding the Fourth Proportional to 279,892.40, 419,838.60 and 173,361.20

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Solution

The fourth proportional to 279,892.40, 419,838.60 and 173,361.20 is: 260,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,892.40 : 419,838.60 = 173,361.20 : x
  2. Step 2: Convert to fraction form
    279,892.40/419,838.60 = 173,361.20/x
  3. Step 3: Cross multiply
    279,892.40x = 419,838.60 × 173,361.20
  4. Step 4: Simplify right side
    279,892.40x = 72,783,723,502.32
  5. Step 5: Solve for x
    x = 72,783,723,502.32/279,892.40
  6. Step 6: Final answer
    x = 260,041.80

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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.