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Finding the Fourth Proportional to 279,299.34, 418,894.94 and 108,520.76

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Solution

The fourth proportional to 279,299.34, 418,894.94 and 108,520.76 is: 162,760.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,299.34 : 418,894.94 = 108,520.76 : x
  2. Step 2: Convert to fraction form
    279,299.34/418,894.94 = 108,520.76/x
  3. Step 3: Cross multiply
    279,299.34x = 418,894.94 × 108,520.76
  4. Step 4: Simplify right side
    279,299.34x = 45,458,798,567.49
  5. Step 5: Solve for x
    x = 45,458,798,567.49/279,299.34
  6. Step 6: Final answer
    x = 162,760.14

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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.