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Finding the Fourth Proportional to 376,992.50, 520,249.65 and 215,900.85

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Solution

The fourth proportional to 376,992.50, 520,249.65 and 215,900.85 is: 297,943.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,992.50 : 520,249.65 = 215,900.85 : x
  2. Step 2: Convert to fraction form
    376,992.50/520,249.65 = 215,900.85/x
  3. Step 3: Cross multiply
    376,992.50x = 520,249.65 × 215,900.85
  4. Step 4: Simplify right side
    376,992.50x = 112,322,340,346.58
  5. Step 5: Solve for x
    x = 112,322,340,346.58/376,992.50
  6. Step 6: Final answer
    x = 297,943.17

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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.