Home / 380,919.21-525,672.79-217,597.34

Finding the Fourth Proportional to 380,919.21, 525,672.79 and 217,597.34

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Solution

The fourth proportional to 380,919.21, 525,672.79 and 217,597.34 is: 300,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,919.21 : 525,672.79 = 217,597.34 : x
  2. Step 2: Convert to fraction form
    380,919.21/525,672.79 = 217,597.34/x
  3. Step 3: Cross multiply
    380,919.21x = 525,672.79 × 217,597.34
  4. Step 4: Simplify right side
    380,919.21x = 114,385,001,584.57
  5. Step 5: Solve for x
    x = 114,385,001,584.57/380,919.21
  6. Step 6: Final answer
    x = 300,286.78

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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.