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Finding the Fourth Proportional to 219,918, 303,486.92 and 124,422.64

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Solution

The fourth proportional to 219,918, 303,486.92 and 124,422.64 is: 171,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,918 : 303,486.92 = 124,422.64 : x
  2. Step 2: Convert to fraction form
    219,918/303,486.92 = 124,422.64/x
  3. Step 3: Cross multiply
    219,918x = 303,486.92 × 124,422.64
  4. Step 4: Simplify right side
    219,918x = 37,760,643,791.87
  5. Step 5: Solve for x
    x = 37,760,643,791.87/219,918
  6. Step 6: Final answer
    x = 171,703.29

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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.