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Finding the Fourth Proportional to 214,110.60, 321,165.90 and 143,608.20

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Solution

The fourth proportional to 214,110.60, 321,165.90 and 143,608.20 is: 215,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,110.60 : 321,165.90 = 143,608.20 : x
  2. Step 2: Convert to fraction form
    214,110.60/321,165.90 = 143,608.20/x
  3. Step 3: Cross multiply
    214,110.60x = 321,165.90 × 143,608.20
  4. Step 4: Simplify right side
    214,110.60x = 46,122,056,800.38
  5. Step 5: Solve for x
    x = 46,122,056,800.38/214,110.60
  6. Step 6: Final answer
    x = 215,412.30

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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.