Home / 278,009.72-416,856.60-109,438.76

Finding the Fourth Proportional to 278,009.72, 416,856.60 and 109,438.76

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Solution

The fourth proportional to 278,009.72, 416,856.60 and 109,438.76 is: 164,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,009.72 : 416,856.60 = 109,438.76 : x
  2. Step 2: Convert to fraction form
    278,009.72/416,856.60 = 109,438.76/x
  3. Step 3: Cross multiply
    278,009.72x = 416,856.60 × 109,438.76
  4. Step 4: Simplify right side
    278,009.72x = 45,620,269,401.82
  5. Step 5: Solve for x
    x = 45,620,269,401.82/278,009.72
  6. Step 6: Final answer
    x = 164,095.95

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1.5x scale

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.