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Finding the Fourth Proportional to 355,287.90, 490,291.36 and 194,139.23

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Solution

The fourth proportional to 355,287.90, 490,291.36 and 194,139.23 is: 267,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,287.90 : 490,291.36 = 194,139.23 : x
  2. Step 2: Convert to fraction form
    355,287.90/490,291.36 = 194,139.23/x
  3. Step 3: Cross multiply
    355,287.90x = 490,291.36 × 194,139.23
  4. Step 4: Simplify right side
    355,287.90x = 95,184,787,846.43
  5. Step 5: Solve for x
    x = 95,184,787,846.43/355,287.90
  6. Step 6: Final answer
    x = 267,908.89

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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.