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Finding the Fourth Proportional to 279,677.64, 419,235.56 and 89,998.61

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Solution

The fourth proportional to 279,677.64, 419,235.56 and 89,998.61 is: 134,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,677.64 : 419,235.56 = 89,998.61 : x
  2. Step 2: Convert to fraction form
    279,677.64/419,235.56 = 89,998.61/x
  3. Step 3: Cross multiply
    279,677.64x = 419,235.56 × 89,998.61
  4. Step 4: Simplify right side
    279,677.64x = 37,730,617,662.57
  5. Step 5: Solve for x
    x = 37,730,617,662.57/279,677.64
  6. Step 6: Final answer
    x = 134,907.52

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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.