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Finding the Fourth Proportional to 355,140.65, 490,086.05 and 193,996.42

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Solution

The fourth proportional to 355,140.65, 490,086.05 and 193,996.42 is: 267,710.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,140.65 : 490,086.05 = 193,996.42 : x
  2. Step 2: Convert to fraction form
    355,140.65/490,086.05 = 193,996.42/x
  3. Step 3: Cross multiply
    355,140.65x = 490,086.05 × 193,996.42
  4. Step 4: Simplify right side
    355,140.65x = 95,074,936,996.74
  5. Step 5: Solve for x
    x = 95,074,936,996.74/355,140.65
  6. Step 6: Final answer
    x = 267,710.66

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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.