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Finding the Fourth Proportional to 279,009, 418,513.50 and 92,035.08

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Solution

The fourth proportional to 279,009, 418,513.50 and 92,035.08 is: 138,052.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,009 : 418,513.50 = 92,035.08 : x
  2. Step 2: Convert to fraction form
    279,009/418,513.50 = 92,035.08/x
  3. Step 3: Cross multiply
    279,009x = 418,513.50 × 92,035.08
  4. Step 4: Simplify right side
    279,009x = 38,517,923,453.58
  5. Step 5: Solve for x
    x = 38,517,923,453.58/279,009
  6. Step 6: Final answer
    x = 138,052.62

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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.