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Finding the Fourth Proportional to 309,425.20, 426,974.70 and 182,093.20

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Solution

The fourth proportional to 309,425.20, 426,974.70 and 182,093.20 is: 251,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,425.20 : 426,974.70 = 182,093.20 : x
  2. Step 2: Convert to fraction form
    309,425.20/426,974.70 = 182,093.20/x
  3. Step 3: Cross multiply
    309,425.20x = 426,974.70 × 182,093.20
  4. Step 4: Simplify right side
    309,425.20x = 77,749,189,442.04
  5. Step 5: Solve for x
    x = 77,749,189,442.04/309,425.20
  6. Step 6: Final answer
    x = 251,269.74

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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.