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Finding the Fourth Proportional to 279,935.70, 419,901.63 and 69,573.30

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Solution

The fourth proportional to 279,935.70, 419,901.63 and 69,573.30 is: 104,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,935.70 : 419,901.63 = 69,573.30 : x
  2. Step 2: Convert to fraction form
    279,935.70/419,901.63 = 69,573.30/x
  3. Step 3: Cross multiply
    279,935.70x = 419,901.63 × 69,573.30
  4. Step 4: Simplify right side
    279,935.70x = 29,213,942,074.48
  5. Step 5: Solve for x
    x = 29,213,942,074.48/279,935.70
  6. Step 6: Final answer
    x = 104,359.47

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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.