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Finding the Fourth Proportional to 331,745.45, 497,618.16 and 82,427.45

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Solution

The fourth proportional to 331,745.45, 497,618.16 and 82,427.45 is: 123,641.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,745.45 : 497,618.16 = 82,427.45 : x
  2. Step 2: Convert to fraction form
    331,745.45/497,618.16 = 82,427.45/x
  3. Step 3: Cross multiply
    331,745.45x = 497,618.16 × 82,427.45
  4. Step 4: Simplify right side
    331,745.45x = 41,017,393,514.40
  5. Step 5: Solve for x
    x = 41,017,393,514.40/331,745.45
  6. Step 6: Final answer
    x = 123,641.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.