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Finding the Fourth Proportional to 223,707.59, 308,710.26 and 121,730.69

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Solution

The fourth proportional to 223,707.59, 308,710.26 and 121,730.69 is: 167,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,707.59 : 308,710.26 = 121,730.69 : x
  2. Step 2: Convert to fraction form
    223,707.59/308,710.26 = 121,730.69/x
  3. Step 3: Cross multiply
    223,707.59x = 308,710.26 × 121,730.69
  4. Step 4: Simplify right side
    223,707.59x = 37,579,511,416.33
  5. Step 5: Solve for x
    x = 37,579,511,416.33/223,707.59
  6. Step 6: Final answer
    x = 167,984.97

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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.