Home / 278,113.78-416,923.27-100,581.32

Finding the Fourth Proportional to 278,113.78, 416,923.27 and 100,581.32

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Solution

The fourth proportional to 278,113.78, 416,923.27 and 100,581.32 is: 150,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,113.78 : 416,923.27 = 100,581.32 : x
  2. Step 2: Convert to fraction form
    278,113.78/416,923.27 = 100,581.32/x
  3. Step 3: Cross multiply
    278,113.78x = 416,923.27 × 100,581.32
  4. Step 4: Simplify right side
    278,113.78x = 41,934,693,626.17
  5. Step 5: Solve for x
    x = 41,934,693,626.17/278,113.78
  6. Step 6: Final answer
    x = 150,782.51

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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.