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Finding the Fourth Proportional to 355,111.80, 490,053.75 and 193,966.86

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Solution

The fourth proportional to 355,111.80, 490,053.75 and 193,966.86 is: 267,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,111.80 : 490,053.75 = 193,966.86 : x
  2. Step 2: Convert to fraction form
    355,111.80/490,053.75 = 193,966.86/x
  3. Step 3: Cross multiply
    355,111.80x = 490,053.75 × 193,966.86
  4. Step 4: Simplify right side
    355,111.80x = 95,054,187,118.73
  5. Step 5: Solve for x
    x = 95,054,187,118.73/355,111.80
  6. Step 6: Final answer
    x = 267,673.98

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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.