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Finding the Fourth Proportional to 380,818.46, 525,409.39 and 219,651.90

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Solution

The fourth proportional to 380,818.46, 525,409.39 and 219,651.90 is: 303,050.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,818.46 : 525,409.39 = 219,651.90 : x
  2. Step 2: Convert to fraction form
    380,818.46/525,409.39 = 219,651.90/x
  3. Step 3: Cross multiply
    380,818.46x = 525,409.39 × 219,651.90
  4. Step 4: Simplify right side
    380,818.46x = 115,407,170,791.34
  5. Step 5: Solve for x
    x = 115,407,170,791.34/380,818.46
  6. Step 6: Final answer
    x = 303,050.36

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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.