Home / 280,912.06-387,861.72-173,629.18

Finding the Fourth Proportional to 280,912.06, 387,861.72 and 173,629.18

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Solution

The fourth proportional to 280,912.06, 387,861.72 and 173,629.18 is: 239,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,912.06 : 387,861.72 = 173,629.18 : x
  2. Step 2: Convert to fraction form
    280,912.06/387,861.72 = 173,629.18/x
  3. Step 3: Cross multiply
    280,912.06x = 387,861.72 × 173,629.18
  4. Step 4: Simplify right side
    280,912.06x = 67,344,112,396.99
  5. Step 5: Solve for x
    x = 67,344,112,396.99/280,912.06
  6. Step 6: Final answer
    x = 239,733.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.