Home / 280,653.28-387,301.91-159,794.62

Finding the Fourth Proportional to 280,653.28, 387,301.91 and 159,794.62

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Solution

The fourth proportional to 280,653.28, 387,301.91 and 159,794.62 is: 220,516.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,653.28 : 387,301.91 = 159,794.62 : x
  2. Step 2: Convert to fraction form
    280,653.28/387,301.91 = 159,794.62/x
  3. Step 3: Cross multiply
    280,653.28x = 387,301.91 × 159,794.62
  4. Step 4: Simplify right side
    280,653.28x = 61,888,759,766.50
  5. Step 5: Solve for x
    x = 61,888,759,766.50/280,653.28
  6. Step 6: Final answer
    x = 220,516.79

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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.