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Finding the Fourth Proportional to 279,203.64, 418,798.86 and 89,664.44

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Solution

The fourth proportional to 279,203.64, 418,798.86 and 89,664.44 is: 134,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,203.64 : 418,798.86 = 89,664.44 : x
  2. Step 2: Convert to fraction form
    279,203.64/418,798.86 = 89,664.44/x
  3. Step 3: Cross multiply
    279,203.64x = 418,798.86 × 89,664.44
  4. Step 4: Simplify right side
    279,203.64x = 37,551,365,254.54
  5. Step 5: Solve for x
    x = 37,551,365,254.54/279,203.64
  6. Step 6: Final answer
    x = 134,494.54

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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.