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Finding the Fourth Proportional to 381,073.16, 525,843.06 and 219,980.11

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Solution

The fourth proportional to 381,073.16, 525,843.06 and 219,980.11 is: 303,550.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,073.16 : 525,843.06 = 219,980.11 : x
  2. Step 2: Convert to fraction form
    381,073.16/525,843.06 = 219,980.11/x
  3. Step 3: Cross multiply
    381,073.16x = 525,843.06 × 219,980.11
  4. Step 4: Simplify right side
    381,073.16x = 115,675,014,181.54
  5. Step 5: Solve for x
    x = 115,675,014,181.54/381,073.16
  6. Step 6: Final answer
    x = 303,550.67

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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.