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Finding the Fourth Proportional to 325,675.20, 488,439.90 and 214,138.20

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Solution

The fourth proportional to 325,675.20, 488,439.90 and 214,138.20 is: 321,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,675.20 : 488,439.90 = 214,138.20 : x
  2. Step 2: Convert to fraction form
    325,675.20/488,439.90 = 214,138.20/x
  3. Step 3: Cross multiply
    325,675.20x = 488,439.90 × 214,138.20
  4. Step 4: Simplify right side
    325,675.20x = 104,593,640,994.18
  5. Step 5: Solve for x
    x = 104,593,640,994.18/325,675.20
  6. Step 6: Final answer
    x = 321,159.37

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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.