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Finding the Fourth Proportional to 219,004.20, 328,410.30 and 100,636.20

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Solution

The fourth proportional to 219,004.20, 328,410.30 and 100,636.20 is: 150,910.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,004.20 : 328,410.30 = 100,636.20 : x
  2. Step 2: Convert to fraction form
    219,004.20/328,410.30 = 100,636.20/x
  3. Step 3: Cross multiply
    219,004.20x = 328,410.30 × 100,636.20
  4. Step 4: Simplify right side
    219,004.20x = 33,049,964,632.86
  5. Step 5: Solve for x
    x = 33,049,964,632.86/219,004.20
  6. Step 6: Final answer
    x = 150,910.19

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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.