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Finding the Fourth Proportional to 215,100.60, 322,359.30 and 143,820.60

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Solution

The fourth proportional to 215,100.60, 322,359.30 and 143,820.60 is: 215,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,100.60 : 322,359.30 = 143,820.60 : x
  2. Step 2: Convert to fraction form
    215,100.60/322,359.30 = 143,820.60/x
  3. Step 3: Cross multiply
    215,100.60x = 322,359.30 × 143,820.60
  4. Step 4: Simplify right side
    215,100.60x = 46,361,907,941.58
  5. Step 5: Solve for x
    x = 46,361,907,941.58/215,100.60
  6. Step 6: Final answer
    x = 215,535.93

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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.