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Finding the Fourth Proportional to 218,231.51, 301,136.01 and 122,717.93

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Solution

The fourth proportional to 218,231.51, 301,136.01 and 122,717.93 is: 169,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,231.51 : 301,136.01 = 122,717.93 : x
  2. Step 2: Convert to fraction form
    218,231.51/301,136.01 = 122,717.93/x
  3. Step 3: Cross multiply
    218,231.51x = 301,136.01 × 122,717.93
  4. Step 4: Simplify right side
    218,231.51x = 36,954,787,795.66
  5. Step 5: Solve for x
    x = 36,954,787,795.66/218,231.51
  6. Step 6: Final answer
    x = 169,337.54

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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.