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Finding the Fourth Proportional to 308,119.96, 425,163.22 and 172,136.89

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Solution

The fourth proportional to 308,119.96, 425,163.22 and 172,136.89 is: 237,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,119.96 : 425,163.22 = 172,136.89 : x
  2. Step 2: Convert to fraction form
    308,119.96/425,163.22 = 172,136.89/x
  3. Step 3: Cross multiply
    308,119.96x = 425,163.22 × 172,136.89
  4. Step 4: Simplify right side
    308,119.96x = 73,186,274,433.19
  5. Step 5: Solve for x
    x = 73,186,274,433.19/308,119.96
  6. Step 6: Final answer
    x = 237,525.26

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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.