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Finding the Fourth Proportional to 325,618.90, 449,368.02 and 189,630.90

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Solution

The fourth proportional to 325,618.90, 449,368.02 and 189,630.90 is: 261,698.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,618.90 : 449,368.02 = 189,630.90 : x
  2. Step 2: Convert to fraction form
    325,618.90/449,368.02 = 189,630.90/x
  3. Step 3: Cross multiply
    325,618.90x = 449,368.02 × 189,630.90
  4. Step 4: Simplify right side
    325,618.90x = 85,214,062,063.82
  5. Step 5: Solve for x
    x = 85,214,062,063.82/325,618.90
  6. Step 6: Final answer
    x = 261,698.76

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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.