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Finding the Fourth Proportional to 279,777.78, 419,790.60 and 146,626.34

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Solution

The fourth proportional to 279,777.78, 419,790.60 and 146,626.34 is: 220,004.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,777.78 : 419,790.60 = 146,626.34 : x
  2. Step 2: Convert to fraction form
    279,777.78/419,790.60 = 146,626.34/x
  3. Step 3: Cross multiply
    279,777.78x = 419,790.60 × 146,626.34
  4. Step 4: Simplify right side
    279,777.78x = 61,552,357,145.45
  5. Step 5: Solve for x
    x = 61,552,357,145.45/279,777.78
  6. Step 6: Final answer
    x = 220,004.45

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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.