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Finding the Fourth Proportional to 213,726.60, 320,664.24 and 80,645.22

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Solution

The fourth proportional to 213,726.60, 320,664.24 and 80,645.22 is: 120,995.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,726.60 : 320,664.24 = 80,645.22 : x
  2. Step 2: Convert to fraction form
    213,726.60/320,664.24 = 80,645.22/x
  3. Step 3: Cross multiply
    213,726.60x = 320,664.24 × 80,645.22
  4. Step 4: Simplify right side
    213,726.60x = 25,860,038,180.93
  5. Step 5: Solve for x
    x = 25,860,038,180.93/213,726.60
  6. Step 6: Final answer
    x = 120,995.88

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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.