Home / 280,778.10-421,273.25-168,536.55

Finding the Fourth Proportional to 280,778.10, 421,273.25 and 168,536.55

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Solution

The fourth proportional to 280,778.10, 421,273.25 and 168,536.55 is: 252,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,778.10 : 421,273.25 = 168,536.55 : x
  2. Step 2: Convert to fraction form
    280,778.10/421,273.25 = 168,536.55/x
  3. Step 3: Cross multiply
    280,778.10x = 421,273.25 × 168,536.55
  4. Step 4: Simplify right side
    280,778.10x = 70,999,940,109.75
  5. Step 5: Solve for x
    x = 70,999,940,109.75/280,778.10
  6. Step 6: Final answer
    x = 252,868.51

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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.