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Finding the Fourth Proportional to 279,835.40, 419,753.09 and 69,473.34

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Solution

The fourth proportional to 279,835.40, 419,753.09 and 69,473.34 is: 104,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,835.40 : 419,753.09 = 69,473.34 : x
  2. Step 2: Convert to fraction form
    279,835.40/419,753.09 = 69,473.34/x
  3. Step 3: Cross multiply
    279,835.40x = 419,753.09 × 69,473.34
  4. Step 4: Simplify right side
    279,835.40x = 29,161,648,790.25
  5. Step 5: Solve for x
    x = 29,161,648,790.25/279,835.40
  6. Step 6: Final answer
    x = 104,210.01

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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.