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Finding the Fourth Proportional to 279,958.59, 419,689.22 and 109,140.93

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Solution

The fourth proportional to 279,958.59, 419,689.22 and 109,140.93 is: 163,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,958.59 : 419,689.22 = 109,140.93 : x
  2. Step 2: Convert to fraction form
    279,958.59/419,689.22 = 109,140.93/x
  3. Step 3: Cross multiply
    279,958.59x = 419,689.22 × 109,140.93
  4. Step 4: Simplify right side
    279,958.59x = 45,805,271,236.07
  5. Step 5: Solve for x
    x = 45,805,271,236.07/279,958.59
  6. Step 6: Final answer
    x = 163,614.45

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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.