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Finding the Fourth Proportional to 318,225.72, 439,136.46 and 174,991.80

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Solution

The fourth proportional to 318,225.72, 439,136.46 and 174,991.80 is: 241,480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,225.72 : 439,136.46 = 174,991.80 : x
  2. Step 2: Convert to fraction form
    318,225.72/439,136.46 = 174,991.80/x
  3. Step 3: Cross multiply
    318,225.72x = 439,136.46 × 174,991.80
  4. Step 4: Simplify right side
    318,225.72x = 76,845,279,581.03
  5. Step 5: Solve for x
    x = 76,845,279,581.03/318,225.72
  6. Step 6: Final answer
    x = 241,480.42

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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.