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Finding the Fourth Proportional to 223,282.88, 308,131.84 and 121,308.31

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Solution

The fourth proportional to 223,282.88, 308,131.84 and 121,308.31 is: 167,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,282.88 : 308,131.84 = 121,308.31 : x
  2. Step 2: Convert to fraction form
    223,282.88/308,131.84 = 121,308.31/x
  3. Step 3: Cross multiply
    223,282.88x = 308,131.84 × 121,308.31
  4. Step 4: Simplify right side
    223,282.88x = 37,378,952,767.59
  5. Step 5: Solve for x
    x = 37,378,952,767.59/223,282.88
  6. Step 6: Final answer
    x = 167,406.26

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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.