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Finding the Fourth Proportional to 381,078.62, 525,850.58 and 219,985.56

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Solution

The fourth proportional to 381,078.62, 525,850.58 and 219,985.56 is: 303,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,078.62 : 525,850.58 = 219,985.56 : x
  2. Step 2: Convert to fraction form
    381,078.62/525,850.58 = 219,985.56/x
  3. Step 3: Cross multiply
    381,078.62x = 525,850.58 × 219,985.56
  4. Step 4: Simplify right side
    381,078.62x = 115,679,533,217.70
  5. Step 5: Solve for x
    x = 115,679,533,217.70/381,078.62
  6. Step 6: Final answer
    x = 303,558.19

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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.