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Finding the Fourth Proportional to 355,109.61, 490,048.35 and 193,964.76

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Solution

The fourth proportional to 355,109.61, 490,048.35 and 193,964.76 is: 267,669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,109.61 : 490,048.35 = 193,964.76 : x
  2. Step 2: Convert to fraction form
    355,109.61/490,048.35 = 193,964.76/x
  3. Step 3: Cross multiply
    355,109.61x = 490,048.35 × 193,964.76
  4. Step 4: Simplify right side
    355,109.61x = 95,052,110,596.15
  5. Step 5: Solve for x
    x = 95,052,110,596.15/355,109.61
  6. Step 6: Final answer
    x = 267,669.78

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1.5x scale

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.