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Finding the Fourth Proportional to 619,550, 928,774.20 and 220,137.92

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Solution

The fourth proportional to 619,550, 928,774.20 and 220,137.92 is: 330,011.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,550 : 928,774.20 = 220,137.92 : x
  2. Step 2: Convert to fraction form
    619,550/928,774.20 = 220,137.92/x
  3. Step 3: Cross multiply
    619,550x = 928,774.20 × 220,137.92
  4. Step 4: Simplify right side
    619,550x = 204,458,420,537.66
  5. Step 5: Solve for x
    x = 204,458,420,537.66/619,550
  6. Step 6: Final answer
    x = 330,011.17

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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.