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Finding the Fourth Proportional to 269,646.51, 372,111.75 and 148,787.70

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Solution

The fourth proportional to 269,646.51, 372,111.75 and 148,787.70 is: 205,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,646.51 : 372,111.75 = 148,787.70 : x
  2. Step 2: Convert to fraction form
    269,646.51/372,111.75 = 148,787.70/x
  3. Step 3: Cross multiply
    269,646.51x = 372,111.75 × 148,787.70
  4. Step 4: Simplify right side
    269,646.51x = 55,365,652,489.64
  5. Step 5: Solve for x
    x = 55,365,652,489.64/269,646.51
  6. Step 6: Final answer
    x = 205,326.79

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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.