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Finding the Fourth Proportional to 318,100.72, 438,979.92 and 182,136.80

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Solution

The fourth proportional to 318,100.72, 438,979.92 and 182,136.80 is: 251,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,100.72 : 438,979.92 = 182,136.80 : x
  2. Step 2: Convert to fraction form
    318,100.72/438,979.92 = 182,136.80/x
  3. Step 3: Cross multiply
    318,100.72x = 438,979.92 × 182,136.80
  4. Step 4: Simplify right side
    318,100.72x = 79,954,397,893.06
  5. Step 5: Solve for x
    x = 79,954,397,893.06/318,100.72
  6. Step 6: Final answer
    x = 251,349.31

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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.