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Finding the Fourth Proportional to 355,805.12, 491,310.25 and 254,142.42

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Solution

The fourth proportional to 355,805.12, 491,310.25 and 254,142.42 is: 350,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,805.12 : 491,310.25 = 254,142.42 : x
  2. Step 2: Convert to fraction form
    355,805.12/491,310.25 = 254,142.42/x
  3. Step 3: Cross multiply
    355,805.12x = 491,310.25 × 254,142.42
  4. Step 4: Simplify right side
    355,805.12x = 124,862,775,905.81
  5. Step 5: Solve for x
    x = 124,862,775,905.81/355,805.12
  6. Step 6: Final answer
    x = 350,930.24

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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.