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Finding the Fourth Proportional to 355,290.62, 490,302.34 and 194,145.66

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Solution

The fourth proportional to 355,290.62, 490,302.34 and 194,145.66 is: 267,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,290.62 : 490,302.34 = 194,145.66 : x
  2. Step 2: Convert to fraction form
    355,290.62/490,302.34 = 194,145.66/x
  3. Step 3: Cross multiply
    355,290.62x = 490,302.34 × 194,145.66
  4. Step 4: Simplify right side
    355,290.62x = 95,190,071,398.84
  5. Step 5: Solve for x
    x = 95,190,071,398.84/355,290.62
  6. Step 6: Final answer
    x = 267,921.71

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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.