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Finding the Fourth Proportional to 205,361.30, 308,071.15 and 63,218.43

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Solution

The fourth proportional to 205,361.30, 308,071.15 and 63,218.43 is: 94,836.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,361.30 : 308,071.15 = 63,218.43 : x
  2. Step 2: Convert to fraction form
    205,361.30/308,071.15 = 63,218.43/x
  3. Step 3: Cross multiply
    205,361.30x = 308,071.15 × 63,218.43
  4. Step 4: Simplify right side
    205,361.30x = 19,475,774,273.25
  5. Step 5: Solve for x
    x = 19,475,774,273.25/205,361.30
  6. Step 6: Final answer
    x = 94,836.63

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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.