Home / 219,025.60-328,538.40-85,910.20

Finding the Fourth Proportional to 219,025.60, 328,538.40 and 85,910.20

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Solution

The fourth proportional to 219,025.60, 328,538.40 and 85,910.20 is: 128,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,025.60 : 328,538.40 = 85,910.20 : x
  2. Step 2: Convert to fraction form
    219,025.60/328,538.40 = 85,910.20/x
  3. Step 3: Cross multiply
    219,025.60x = 328,538.40 × 85,910.20
  4. Step 4: Simplify right side
    219,025.60x = 28,224,799,651.68
  5. Step 5: Solve for x
    x = 28,224,799,651.68/219,025.60
  6. Step 6: Final answer
    x = 128,865.30

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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.