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Finding the Fourth Proportional to 218,379.63, 301,361.74 and 127,718.43

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Solution

The fourth proportional to 218,379.63, 301,361.74 and 127,718.43 is: 176,250.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,379.63 : 301,361.74 = 127,718.43 : x
  2. Step 2: Convert to fraction form
    218,379.63/301,361.74 = 127,718.43/x
  3. Step 3: Cross multiply
    218,379.63x = 301,361.74 × 127,718.43
  4. Step 4: Simplify right side
    218,379.63x = 38,489,448,294.87
  5. Step 5: Solve for x
    x = 38,489,448,294.87/218,379.63
  6. Step 6: Final answer
    x = 176,250.18

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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.