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Finding the Fourth Proportional to 278,579.73, 418,035.61 and 101,100.58

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Solution

The fourth proportional to 278,579.73, 418,035.61 and 101,100.58 is: 151,711.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,579.73 : 418,035.61 = 101,100.58 : x
  2. Step 2: Convert to fraction form
    278,579.73/418,035.61 = 101,100.58/x
  3. Step 3: Cross multiply
    278,579.73x = 418,035.61 × 101,100.58
  4. Step 4: Simplify right side
    278,579.73x = 42,263,641,333.81
  5. Step 5: Solve for x
    x = 42,263,641,333.81/278,579.73
  6. Step 6: Final answer
    x = 151,711.11

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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.