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Finding the Fourth Proportional to 325,633.80, 488,450.70 and 213,659.40

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Solution

The fourth proportional to 325,633.80, 488,450.70 and 213,659.40 is: 320,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,633.80 : 488,450.70 = 213,659.40 : x
  2. Step 2: Convert to fraction form
    325,633.80/488,450.70 = 213,659.40/x
  3. Step 3: Cross multiply
    325,633.80x = 488,450.70 × 213,659.40
  4. Step 4: Simplify right side
    325,633.80x = 104,362,083,491.58
  5. Step 5: Solve for x
    x = 104,362,083,491.58/325,633.80
  6. Step 6: Final answer
    x = 320,489.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.