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Finding the Fourth Proportional to 223,705.53, 308,714.22 and 121,730.97

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Solution

The fourth proportional to 223,705.53, 308,714.22 and 121,730.97 is: 167,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,705.53 : 308,714.22 = 121,730.97 : x
  2. Step 2: Convert to fraction form
    223,705.53/308,714.22 = 121,730.97/x
  3. Step 3: Cross multiply
    223,705.53x = 308,714.22 × 121,730.97
  4. Step 4: Simplify right side
    223,705.53x = 37,580,081,453.39
  5. Step 5: Solve for x
    x = 37,580,081,453.39/223,705.53
  6. Step 6: Final answer
    x = 167,989.06

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1.5x scale

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.