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Finding the Fourth Proportional to 279,108.57, 418,473.38 and 141,994.68

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Solution

The fourth proportional to 279,108.57, 418,473.38 and 141,994.68 is: 212,895.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,108.57 : 418,473.38 = 141,994.68 : x
  2. Step 2: Convert to fraction form
    279,108.57/418,473.38 = 141,994.68/x
  3. Step 3: Cross multiply
    279,108.57x = 418,473.38 × 141,994.68
  4. Step 4: Simplify right side
    279,108.57x = 59,420,995,309.88
  5. Step 5: Solve for x
    x = 59,420,995,309.88/279,108.57
  6. Step 6: Final answer
    x = 212,895.63

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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.