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Finding the Fourth Proportional to 279,134.96, 418,639.55 and 79,450.92

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Solution

The fourth proportional to 279,134.96, 418,639.55 and 79,450.92 is: 119,158.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,134.96 : 418,639.55 = 79,450.92 : x
  2. Step 2: Convert to fraction form
    279,134.96/418,639.55 = 79,450.92/x
  3. Step 3: Cross multiply
    279,134.96x = 418,639.55 × 79,450.92
  4. Step 4: Simplify right side
    279,134.96x = 33,261,296,998.63
  5. Step 5: Solve for x
    x = 33,261,296,998.63/279,134.96
  6. Step 6: Final answer
    x = 119,158.48

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1.5x scale

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.