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Finding the Fourth Proportional to 331,804.80, 497,709.06 and 82,486.80

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Solution

The fourth proportional to 331,804.80, 497,709.06 and 82,486.80 is: 123,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,804.80 : 497,709.06 = 82,486.80 : x
  2. Step 2: Convert to fraction form
    331,804.80/497,709.06 = 82,486.80/x
  3. Step 3: Cross multiply
    331,804.80x = 497,709.06 × 82,486.80
  4. Step 4: Simplify right side
    331,804.80x = 41,054,427,690.41
  5. Step 5: Solve for x
    x = 41,054,427,690.41/331,804.80
  6. Step 6: Final answer
    x = 123,730.66

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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.