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Finding the Fourth Proportional to 401,773.12, 554,441.76 and 220,486.72

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Solution

The fourth proportional to 401,773.12, 554,441.76 and 220,486.72 is: 304,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,773.12 : 554,441.76 = 220,486.72 : x
  2. Step 2: Convert to fraction form
    401,773.12/554,441.76 = 220,486.72/x
  3. Step 3: Cross multiply
    401,773.12x = 554,441.76 × 220,486.72
  4. Step 4: Simplify right side
    401,773.12x = 122,247,045,093.43
  5. Step 5: Solve for x
    x = 122,247,045,093.43/401,773.12
  6. Step 6: Final answer
    x = 304,268.85

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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.