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Finding the Fourth Proportional to 218,939.44, 302,136.26 and 118,337.44

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Solution

The fourth proportional to 218,939.44, 302,136.26 and 118,337.44 is: 163,305.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,939.44 : 302,136.26 = 118,337.44 : x
  2. Step 2: Convert to fraction form
    218,939.44/302,136.26 = 118,337.44/x
  3. Step 3: Cross multiply
    218,939.44x = 302,136.26 × 118,337.44
  4. Step 4: Simplify right side
    218,939.44x = 35,754,031,539.57
  5. Step 5: Solve for x
    x = 35,754,031,539.57/218,939.44
  6. Step 6: Final answer
    x = 163,305.58

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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.