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Finding the Fourth Proportional to 351,661.11, 485,291.43 and 190,520.12

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Solution

The fourth proportional to 351,661.11, 485,291.43 and 190,520.12 is: 262,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,661.11 : 485,291.43 = 190,520.12 : x
  2. Step 2: Convert to fraction form
    351,661.11/485,291.43 = 190,520.12/x
  3. Step 3: Cross multiply
    351,661.11x = 485,291.43 × 190,520.12
  4. Step 4: Simplify right side
    351,661.11x = 92,457,779,052.11
  5. Step 5: Solve for x
    x = 92,457,779,052.11/351,661.11
  6. Step 6: Final answer
    x = 262,917.27

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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.