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Finding the Fourth Proportional to 381,015.36, 525,798.72 and 211,249.44

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Solution

The fourth proportional to 381,015.36, 525,798.72 and 211,249.44 is: 291,522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,015.36 : 525,798.72 = 211,249.44 : x
  2. Step 2: Convert to fraction form
    381,015.36/525,798.72 = 211,249.44/x
  3. Step 3: Cross multiply
    381,015.36x = 525,798.72 × 211,249.44
  4. Step 4: Simplify right side
    381,015.36x = 111,074,685,152.72
  5. Step 5: Solve for x
    x = 111,074,685,152.72/381,015.36
  6. Step 6: Final answer
    x = 291,522.85

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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.