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Finding the Fourth Proportional to 355,254.89, 490,255.18 and 194,109.93

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Solution

The fourth proportional to 355,254.89, 490,255.18 and 194,109.93 is: 267,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,254.89 : 490,255.18 = 194,109.93 : x
  2. Step 2: Convert to fraction form
    355,254.89/490,255.18 = 194,109.93/x
  3. Step 3: Cross multiply
    355,254.89x = 490,255.18 × 194,109.93
  4. Step 4: Simplify right side
    355,254.89x = 95,163,397,899.69
  5. Step 5: Solve for x
    x = 95,163,397,899.69/355,254.89
  6. Step 6: Final answer
    x = 267,873.58

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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.