Home / 219,189.32-328,706.22-78,910.28

Finding the Fourth Proportional to 219,189.32, 328,706.22 and 78,910.28

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Solution

The fourth proportional to 219,189.32, 328,706.22 and 78,910.28 is: 118,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,189.32 : 328,706.22 = 78,910.28 : x
  2. Step 2: Convert to fraction form
    219,189.32/328,706.22 = 78,910.28/x
  3. Step 3: Cross multiply
    219,189.32x = 328,706.22 × 78,910.28
  4. Step 4: Simplify right side
    219,189.32x = 25,938,299,857.94
  5. Step 5: Solve for x
    x = 25,938,299,857.94/219,189.32
  6. Step 6: Final answer
    x = 118,337.43

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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.