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Finding the Fourth Proportional to 214,054.40, 320,851.20 and 80,883.20

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Solution

The fourth proportional to 214,054.40, 320,851.20 and 80,883.20 is: 121,237.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,054.40 : 320,851.20 = 80,883.20 : x
  2. Step 2: Convert to fraction form
    214,054.40/320,851.20 = 80,883.20/x
  3. Step 3: Cross multiply
    214,054.40x = 320,851.20 × 80,883.20
  4. Step 4: Simplify right side
    214,054.40x = 25,951,471,779.84
  5. Step 5: Solve for x
    x = 25,951,471,779.84/214,054.40
  6. Step 6: Final answer
    x = 121,237.74

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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.