Home / 214,089.60-321,134.40-143,587.20

Finding the Fourth Proportional to 214,089.60, 321,134.40 and 143,587.20

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Solution

The fourth proportional to 214,089.60, 321,134.40 and 143,587.20 is: 215,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,089.60 : 321,134.40 = 143,587.20 : x
  2. Step 2: Convert to fraction form
    214,089.60/321,134.40 = 143,587.20/x
  3. Step 3: Cross multiply
    214,089.60x = 321,134.40 × 143,587.20
  4. Step 4: Simplify right side
    214,089.60x = 46,110,789,319.68
  5. Step 5: Solve for x
    x = 46,110,789,319.68/214,089.60
  6. Step 6: Final answer
    x = 215,380.80

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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.