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Finding the Fourth Proportional to 279,137.21, 418,869.83 and 101,654.87

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Solution

The fourth proportional to 279,137.21, 418,869.83 and 101,654.87 is: 152,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,137.21 : 418,869.83 = 101,654.87 : x
  2. Step 2: Convert to fraction form
    279,137.21/418,869.83 = 101,654.87/x
  3. Step 3: Cross multiply
    279,137.21x = 418,869.83 × 101,654.87
  4. Step 4: Simplify right side
    279,137.21x = 42,580,156,275.36
  5. Step 5: Solve for x
    x = 42,580,156,275.36/279,137.21
  6. Step 6: Final answer
    x = 152,542.03

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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.