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Finding the Fourth Proportional to 351,813.27, 485,489.28 and 190,664.86

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Solution

The fourth proportional to 351,813.27, 485,489.28 and 190,664.86 is: 263,110.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,813.27 : 485,489.28 = 190,664.86 : x
  2. Step 2: Convert to fraction form
    351,813.27/485,489.28 = 190,664.86/x
  3. Step 3: Cross multiply
    351,813.27x = 485,489.28 × 190,664.86
  4. Step 4: Simplify right side
    351,813.27x = 92,565,747,111.58
  5. Step 5: Solve for x
    x = 92,565,747,111.58/351,813.27
  6. Step 6: Final answer
    x = 263,110.45

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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.