Home / 221,027.10-331,540.65-80,840.40

Finding the Fourth Proportional to 221,027.10, 331,540.65 and 80,840.40

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Solution

The fourth proportional to 221,027.10, 331,540.65 and 80,840.40 is: 121,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,027.10 : 331,540.65 = 80,840.40 : x
  2. Step 2: Convert to fraction form
    221,027.10/331,540.65 = 80,840.40/x
  3. Step 3: Cross multiply
    221,027.10x = 331,540.65 × 80,840.40
  4. Step 4: Simplify right side
    221,027.10x = 26,801,878,762.26
  5. Step 5: Solve for x
    x = 26,801,878,762.26/221,027.10
  6. Step 6: Final answer
    x = 121,260.60

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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.