Home / 278,637.78-417,824.93-107,939.45

Finding the Fourth Proportional to 278,637.78, 417,824.93 and 107,939.45

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Solution

The fourth proportional to 278,637.78, 417,824.93 and 107,939.45 is: 161,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,637.78 : 417,824.93 = 107,939.45 : x
  2. Step 2: Convert to fraction form
    278,637.78/417,824.93 = 107,939.45/x
  3. Step 3: Cross multiply
    278,637.78x = 417,824.93 × 107,939.45
  4. Step 4: Simplify right side
    278,637.78x = 45,099,794,454.90
  5. Step 5: Solve for x
    x = 45,099,794,454.90/278,637.78
  6. Step 6: Final answer
    x = 161,858.14

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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.