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Finding the Fourth Proportional to 381,130.97, 525,947.49 and 211,380.89

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Solution

The fourth proportional to 381,130.97, 525,947.49 and 211,380.89 is: 291,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,130.97 : 525,947.49 = 211,380.89 : x
  2. Step 2: Convert to fraction form
    381,130.97/525,947.49 = 211,380.89/x
  3. Step 3: Cross multiply
    381,130.97x = 525,947.49 × 211,380.89
  4. Step 4: Simplify right side
    381,130.97x = 111,175,245,899.73
  5. Step 5: Solve for x
    x = 111,175,245,899.73/381,130.97
  6. Step 6: Final answer
    x = 291,698.28

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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.