Home / 221,317.70-331,539.15-121,298.90

Finding the Fourth Proportional to 221,317.70, 331,539.15 and 121,298.90

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Solution

The fourth proportional to 221,317.70, 331,539.15 and 121,298.90 is: 181,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,317.70 : 331,539.15 = 121,298.90 : x
  2. Step 2: Convert to fraction form
    221,317.70/331,539.15 = 121,298.90/x
  3. Step 3: Cross multiply
    221,317.70x = 331,539.15 × 121,298.90
  4. Step 4: Simplify right side
    221,317.70x = 40,215,334,201.94
  5. Step 5: Solve for x
    x = 40,215,334,201.94/221,317.70
  6. Step 6: Final answer
    x = 181,708.62

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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.