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Finding the Fourth Proportional to 274,547.26, 378,883.13 and 153,687.83

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Solution

The fourth proportional to 274,547.26, 378,883.13 and 153,687.83 is: 212,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,547.26 : 378,883.13 = 153,687.83 : x
  2. Step 2: Convert to fraction form
    274,547.26/378,883.13 = 153,687.83/x
  3. Step 3: Cross multiply
    274,547.26x = 378,883.13 × 153,687.83
  4. Step 4: Simplify right side
    274,547.26x = 58,229,725,304.87
  5. Step 5: Solve for x
    x = 58,229,725,304.87/274,547.26
  6. Step 6: Final answer
    x = 212,093.64

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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.