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Finding the Fourth Proportional to 351,810.90, 485,497.80 and 190,669.86

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Solution

The fourth proportional to 351,810.90, 485,497.80 and 190,669.86 is: 263,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,810.90 : 485,497.80 = 190,669.86 : x
  2. Step 2: Convert to fraction form
    351,810.90/485,497.80 = 190,669.86/x
  3. Step 3: Cross multiply
    351,810.90x = 485,497.80 × 190,669.86
  4. Step 4: Simplify right side
    351,810.90x = 92,569,797,556.31
  5. Step 5: Solve for x
    x = 92,569,797,556.31/351,810.90
  6. Step 6: Final answer
    x = 263,123.73

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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.