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Finding the Fourth Proportional to 325,710.67, 449,444.45 and 189,716.18

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Solution

The fourth proportional to 325,710.67, 449,444.45 and 189,716.18 is: 261,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,710.67 : 449,444.45 = 189,716.18 : x
  2. Step 2: Convert to fraction form
    325,710.67/449,444.45 = 189,716.18/x
  3. Step 3: Cross multiply
    325,710.67x = 449,444.45 × 189,716.18
  4. Step 4: Simplify right side
    325,710.67x = 85,266,881,336.12
  5. Step 5: Solve for x
    x = 85,266,881,336.12/325,710.67
  6. Step 6: Final answer
    x = 261,787.19

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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.