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Finding the Fourth Proportional to 383,850.25, 529,710.38 and 211,775.47

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Solution

The fourth proportional to 383,850.25, 529,710.38 and 211,775.47 is: 292,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,850.25 : 529,710.38 = 211,775.47 : x
  2. Step 2: Convert to fraction form
    383,850.25/529,710.38 = 211,775.47/x
  3. Step 3: Cross multiply
    383,850.25x = 529,710.38 × 211,775.47
  4. Step 4: Simplify right side
    383,850.25x = 112,179,663,893.54
  5. Step 5: Solve for x
    x = 112,179,663,893.54/383,850.25
  6. Step 6: Final answer
    x = 292,248.51

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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.