Home / 278,930.70-418,724.10-276,962.40

Finding the Fourth Proportional to 278,930.70, 418,724.10 and 276,962.40

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Solution

The fourth proportional to 278,930.70, 418,724.10 and 276,962.40 is: 415,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,930.70 : 418,724.10 = 276,962.40 : x
  2. Step 2: Convert to fraction form
    278,930.70/418,724.10 = 276,962.40/x
  3. Step 3: Cross multiply
    278,930.70x = 418,724.10 × 276,962.40
  4. Step 4: Simplify right side
    278,930.70x = 115,970,831,673.84
  5. Step 5: Solve for x
    x = 115,970,831,673.84/278,930.70
  6. Step 6: Final answer
    x = 415,769.34

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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.