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Finding the Fourth Proportional to 447,459.80, 671,435.73 and 210,796.43

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Solution

The fourth proportional to 447,459.80, 671,435.73 and 210,796.43 is: 316,310.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,459.80 : 671,435.73 = 210,796.43 : x
  2. Step 2: Convert to fraction form
    447,459.80/671,435.73 = 210,796.43/x
  3. Step 3: Cross multiply
    447,459.80x = 671,435.73 × 210,796.43
  4. Step 4: Simplify right side
    447,459.80x = 141,536,251,501.27
  5. Step 5: Solve for x
    x = 141,536,251,501.27/447,459.80
  6. Step 6: Final answer
    x = 316,310.54

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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.