Home / 219,476.97-302,910.41-128,882.57

Finding the Fourth Proportional to 219,476.97, 302,910.41 and 128,882.57

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Solution

The fourth proportional to 219,476.97, 302,910.41 and 128,882.57 is: 177,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,476.97 : 302,910.41 = 128,882.57 : x
  2. Step 2: Convert to fraction form
    219,476.97/302,910.41 = 128,882.57/x
  3. Step 3: Cross multiply
    219,476.97x = 302,910.41 × 128,882.57
  4. Step 4: Simplify right side
    219,476.97x = 39,039,870,928.21
  5. Step 5: Solve for x
    x = 39,039,870,928.21/219,476.97
  6. Step 6: Final answer
    x = 177,876.84

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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.