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Finding the Fourth Proportional to 279,425.40, 419,133.98 and 69,063.32

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Solution

The fourth proportional to 279,425.40, 419,133.98 and 69,063.32 is: 103,593.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,425.40 : 419,133.98 = 69,063.32 : x
  2. Step 2: Convert to fraction form
    279,425.40/419,133.98 = 69,063.32/x
  3. Step 3: Cross multiply
    279,425.40x = 419,133.98 × 69,063.32
  4. Step 4: Simplify right side
    279,425.40x = 28,946,784,183.61
  5. Step 5: Solve for x
    x = 28,946,784,183.61/279,425.40
  6. Step 6: Final answer
    x = 103,593.96

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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.