Home / 443,431.77-664,975.09-143,839.90

Finding the Fourth Proportional to 443,431.77, 664,975.09 and 143,839.90

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Solution

The fourth proportional to 443,431.77, 664,975.09 and 143,839.90 is: 215,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,431.77 : 664,975.09 = 143,839.90 : x
  2. Step 2: Convert to fraction form
    443,431.77/664,975.09 = 143,839.90/x
  3. Step 3: Cross multiply
    443,431.77x = 664,975.09 × 143,839.90
  4. Step 4: Simplify right side
    443,431.77x = 95,649,950,448.09
  5. Step 5: Solve for x
    x = 95,649,950,448.09/443,431.77
  6. Step 6: Final answer
    x = 215,703.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.