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Finding the Fourth Proportional to 279,677.79, 419,191.20 and 159,818.76

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Solution

The fourth proportional to 279,677.79, 419,191.20 and 159,818.76 is: 239,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,677.79 : 419,191.20 = 159,818.76 : x
  2. Step 2: Convert to fraction form
    279,677.79/419,191.20 = 159,818.76/x
  3. Step 3: Cross multiply
    279,677.79x = 419,191.20 × 159,818.76
  4. Step 4: Simplify right side
    279,677.79x = 66,994,617,786.91
  5. Step 5: Solve for x
    x = 66,994,617,786.91/279,677.79
  6. Step 6: Final answer
    x = 239,542.15

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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.