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Finding the Fourth Proportional to 447,070.73, 616,961.97 and 243,126.03

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Solution

The fourth proportional to 447,070.73, 616,961.97 and 243,126.03 is: 335,516.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,070.73 : 616,961.97 = 243,126.03 : x
  2. Step 2: Convert to fraction form
    447,070.73/616,961.97 = 243,126.03/x
  3. Step 3: Cross multiply
    447,070.73x = 616,961.97 × 243,126.03
  4. Step 4: Simplify right side
    447,070.73x = 149,999,511,342.27
  5. Step 5: Solve for x
    x = 149,999,511,342.27/447,070.73
  6. Step 6: Final answer
    x = 335,516.29

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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.