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Finding the Fourth Proportional to 383,596.80, 529,370.56 and 213,812.64

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Solution

The fourth proportional to 383,596.80, 529,370.56 and 213,812.64 is: 295,065.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,596.80 : 529,370.56 = 213,812.64 : x
  2. Step 2: Convert to fraction form
    383,596.80/529,370.56 = 213,812.64/x
  3. Step 3: Cross multiply
    383,596.80x = 529,370.56 × 213,812.64
  4. Step 4: Simplify right side
    383,596.80x = 113,186,116,971.88
  5. Step 5: Solve for x
    x = 113,186,116,971.88/383,596.80
  6. Step 6: Final answer
    x = 295,065.33

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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.