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Finding the Fourth Proportional to 380,616.41, 525,306.60 and 219,439.98

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Solution

The fourth proportional to 380,616.41, 525,306.60 and 219,439.98 is: 302,859.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,616.41 : 525,306.60 = 219,439.98 : x
  2. Step 2: Convert to fraction form
    380,616.41/525,306.60 = 219,439.98/x
  3. Step 3: Cross multiply
    380,616.41x = 525,306.60 × 219,439.98
  4. Step 4: Simplify right side
    380,616.41x = 115,273,269,797.87
  5. Step 5: Solve for x
    x = 115,273,269,797.87/380,616.41
  6. Step 6: Final answer
    x = 302,859.43

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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.