Home / 280,383.45-386,915.67-159,513.36

Finding the Fourth Proportional to 280,383.45, 386,915.67 and 159,513.36

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Solution

The fourth proportional to 280,383.45, 386,915.67 and 159,513.36 is: 220,120.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,383.45 : 386,915.67 = 159,513.36 : x
  2. Step 2: Convert to fraction form
    280,383.45/386,915.67 = 159,513.36/x
  3. Step 3: Cross multiply
    280,383.45x = 386,915.67 × 159,513.36
  4. Step 4: Simplify right side
    280,383.45x = 61,718,218,558.35
  5. Step 5: Solve for x
    x = 61,718,218,558.35/280,383.45
  6. Step 6: Final answer
    x = 220,120.76

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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.