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Finding the Fourth Proportional to 278,609.73, 417,628.67 and 110,061.69

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Solution

The fourth proportional to 278,609.73, 417,628.67 and 110,061.69 is: 164,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,609.73 : 417,628.67 = 110,061.69 : x
  2. Step 2: Convert to fraction form
    278,609.73/417,628.67 = 110,061.69/x
  3. Step 3: Cross multiply
    278,609.73x = 417,628.67 × 110,061.69
  4. Step 4: Simplify right side
    278,609.73x = 45,964,916,662.34
  5. Step 5: Solve for x
    x = 45,964,916,662.34/278,609.73
  6. Step 6: Final answer
    x = 164,979.58

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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.