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Finding the Fourth Proportional to 218,991.66, 302,052.90 and 142,369.44

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Solution

The fourth proportional to 218,991.66, 302,052.90 and 142,369.44 is: 196,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,991.66 : 302,052.90 = 142,369.44 : x
  2. Step 2: Convert to fraction form
    218,991.66/302,052.90 = 142,369.44/x
  3. Step 3: Cross multiply
    218,991.66x = 302,052.90 × 142,369.44
  4. Step 4: Simplify right side
    218,991.66x = 43,003,102,223.38
  5. Step 5: Solve for x
    x = 43,003,102,223.38/218,991.66
  6. Step 6: Final answer
    x = 196,368.68

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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.