Home / 219,689.38-329,415.51-99,680.85

Finding the Fourth Proportional to 219,689.38, 329,415.51 and 99,680.85

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Solution

The fourth proportional to 219,689.38, 329,415.51 and 99,680.85 is: 149,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,689.38 : 329,415.51 = 99,680.85 : x
  2. Step 2: Convert to fraction form
    219,689.38/329,415.51 = 99,680.85/x
  3. Step 3: Cross multiply
    219,689.38x = 329,415.51 × 99,680.85
  4. Step 4: Simplify right side
    219,689.38x = 32,836,415,894.50
  5. Step 5: Solve for x
    x = 32,836,415,894.50/219,689.38
  6. Step 6: Final answer
    x = 149,467.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.