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Finding the Fourth Proportional to 219,992.20, 303,593.55 and 143,560.20

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Solution

The fourth proportional to 219,992.20, 303,593.55 and 143,560.20 is: 198,115.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,992.20 : 303,593.55 = 143,560.20 : x
  2. Step 2: Convert to fraction form
    219,992.20/303,593.55 = 143,560.20/x
  3. Step 3: Cross multiply
    219,992.20x = 303,593.55 × 143,560.20
  4. Step 4: Simplify right side
    219,992.20x = 43,583,950,756.71
  5. Step 5: Solve for x
    x = 43,583,950,756.71/219,992.20
  6. Step 6: Final answer
    x = 198,115.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.