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Finding the Fourth Proportional to 619,881.12, 929,499.03 and 220,463.64

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Solution

The fourth proportional to 619,881.12, 929,499.03 and 220,463.64 is: 330,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,881.12 : 929,499.03 = 220,463.64 : x
  2. Step 2: Convert to fraction form
    619,881.12/929,499.03 = 220,463.64/x
  3. Step 3: Cross multiply
    619,881.12x = 929,499.03 × 220,463.64
  4. Step 4: Simplify right side
    619,881.12x = 204,920,739,530.27
  5. Step 5: Solve for x
    x = 204,920,739,530.27/619,881.12
  6. Step 6: Final answer
    x = 330,580.71

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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.