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Finding the Fourth Proportional to 279,615.29, 419,381.01 and 90,050.58

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Solution

The fourth proportional to 279,615.29, 419,381.01 and 90,050.58 is: 135,062.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,615.29 : 419,381.01 = 90,050.58 : x
  2. Step 2: Convert to fraction form
    279,615.29/419,381.01 = 90,050.58/x
  3. Step 3: Cross multiply
    279,615.29x = 419,381.01 × 90,050.58
  4. Step 4: Simplify right side
    279,615.29x = 37,765,503,191.49
  5. Step 5: Solve for x
    x = 37,765,503,191.49/279,615.29
  6. Step 6: Final answer
    x = 135,062.37

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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.