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Finding the Fourth Proportional to 218,484.86, 301,514.69 and 122,994.91

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Solution

The fourth proportional to 218,484.86, 301,514.69 and 122,994.91 is: 169,736.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,484.86 : 301,514.69 = 122,994.91 : x
  2. Step 2: Convert to fraction form
    218,484.86/301,514.69 = 122,994.91/x
  3. Step 3: Cross multiply
    218,484.86x = 301,514.69 × 122,994.91
  4. Step 4: Simplify right side
    218,484.86x = 37,084,770,037.68
  5. Step 5: Solve for x
    x = 37,084,770,037.68/218,484.86
  6. Step 6: Final answer
    x = 169,736.11

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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.