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Finding the Fourth Proportional to 381,130.98, 525,947.52 and 211,380.90

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Solution

The fourth proportional to 381,130.98, 525,947.52 and 211,380.90 is: 291,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,130.98 : 525,947.52 = 211,380.90 : x
  2. Step 2: Convert to fraction form
    381,130.98/525,947.52 = 211,380.90/x
  3. Step 3: Cross multiply
    381,130.98x = 525,947.52 × 211,380.90
  4. Step 4: Simplify right side
    381,130.98x = 111,175,260,130.37
  5. Step 5: Solve for x
    x = 111,175,260,130.37/381,130.98
  6. Step 6: Final answer
    x = 291,698.30

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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.