Home / 280,376.75-386,914.92-159,515.43

Finding the Fourth Proportional to 280,376.75, 386,914.92 and 159,515.43

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Solution

The fourth proportional to 280,376.75, 386,914.92 and 159,515.43 is: 220,128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,376.75 : 386,914.92 = 159,515.43 : x
  2. Step 2: Convert to fraction form
    280,376.75/386,914.92 = 159,515.43/x
  3. Step 3: Cross multiply
    280,376.75x = 386,914.92 × 159,515.43
  4. Step 4: Simplify right side
    280,376.75x = 61,718,899,837.22
  5. Step 5: Solve for x
    x = 61,718,899,837.22/280,376.75
  6. Step 6: Final answer
    x = 220,128.46

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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.