Home / 278,458.45-417,735.06-109,890.57

Finding the Fourth Proportional to 278,458.45, 417,735.06 and 109,890.57

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Solution

The fourth proportional to 278,458.45, 417,735.06 and 109,890.57 is: 164,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,458.45 : 417,735.06 = 109,890.57 : x
  2. Step 2: Convert to fraction form
    278,458.45/417,735.06 = 109,890.57/x
  3. Step 3: Cross multiply
    278,458.45x = 417,735.06 × 109,890.57
  4. Step 4: Simplify right side
    278,458.45x = 45,905,143,852.38
  5. Step 5: Solve for x
    x = 45,905,143,852.38/278,458.45
  6. Step 6: Final answer
    x = 164,854.55

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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.