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Finding the Fourth Proportional to 351,564.77, 485,189.22 and 198,631.07

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Solution

The fourth proportional to 351,564.77, 485,189.22 and 198,631.07 is: 274,127.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,564.77 : 485,189.22 = 198,631.07 : x
  2. Step 2: Convert to fraction form
    351,564.77/485,189.22 = 198,631.07/x
  3. Step 3: Cross multiply
    351,564.77x = 485,189.22 × 198,631.07
  4. Step 4: Simplify right side
    351,564.77x = 96,373,653,921.07
  5. Step 5: Solve for x
    x = 96,373,653,921.07/351,564.77
  6. Step 6: Final answer
    x = 274,127.73

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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.