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Finding the Fourth Proportional to 279,990.89, 419,867.87 and 153,595.04

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Solution

The fourth proportional to 279,990.89, 419,867.87 and 153,595.04 is: 230,327.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,990.89 : 419,867.87 = 153,595.04 : x
  2. Step 2: Convert to fraction form
    279,990.89/419,867.87 = 153,595.04/x
  3. Step 3: Cross multiply
    279,990.89x = 419,867.87 × 153,595.04
  4. Step 4: Simplify right side
    279,990.89x = 64,489,622,569.06
  5. Step 5: Solve for x
    x = 64,489,622,569.06/279,990.89
  6. Step 6: Final answer
    x = 230,327.58

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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.