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Finding the Fourth Proportional to 401,120.76, 553,546.74 and 219,839.88

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Solution

The fourth proportional to 401,120.76, 553,546.74 and 219,839.88 is: 303,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,120.76 : 553,546.74 = 219,839.88 : x
  2. Step 2: Convert to fraction form
    401,120.76/553,546.74 = 219,839.88/x
  3. Step 3: Cross multiply
    401,120.76x = 553,546.74 × 219,839.88
  4. Step 4: Simplify right side
    401,120.76x = 121,691,648,895.99
  5. Step 5: Solve for x
    x = 121,691,648,895.99/401,120.76
  6. Step 6: Final answer
    x = 303,379.08

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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.