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Finding the Fourth Proportional to 279,592.32, 419,402.31 and 79,942.08

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Solution

The fourth proportional to 279,592.32, 419,402.31 and 79,942.08 is: 119,917.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,592.32 : 419,402.31 = 79,942.08 : x
  2. Step 2: Convert to fraction form
    279,592.32/419,402.31 = 79,942.08/x
  3. Step 3: Cross multiply
    279,592.32x = 419,402.31 × 79,942.08
  4. Step 4: Simplify right side
    279,592.32x = 33,527,893,018.20
  5. Step 5: Solve for x
    x = 33,527,893,018.20/279,592.32
  6. Step 6: Final answer
    x = 119,917.07

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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.