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Finding the Fourth Proportional to 383,167.69, 528,771.42 and 213,401.80

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Solution

The fourth proportional to 383,167.69, 528,771.42 and 213,401.80 is: 294,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,167.69 : 528,771.42 = 213,401.80 : x
  2. Step 2: Convert to fraction form
    383,167.69/528,771.42 = 213,401.80/x
  3. Step 3: Cross multiply
    383,167.69x = 528,771.42 × 213,401.80
  4. Step 4: Simplify right side
    383,167.69x = 112,840,772,816.56
  5. Step 5: Solve for x
    x = 112,840,772,816.56/383,167.69
  6. Step 6: Final answer
    x = 294,494.49

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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.