Home / 221,325.90-331,950.45-81,012.30

Finding the Fourth Proportional to 221,325.90, 331,950.45 and 81,012.30

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Solution

The fourth proportional to 221,325.90, 331,950.45 and 81,012.30 is: 121,504.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,325.90 : 331,950.45 = 81,012.30 : x
  2. Step 2: Convert to fraction form
    221,325.90/331,950.45 = 81,012.30/x
  3. Step 3: Cross multiply
    221,325.90x = 331,950.45 × 81,012.30
  4. Step 4: Simplify right side
    221,325.90x = 26,892,069,440.54
  5. Step 5: Solve for x
    x = 26,892,069,440.54/221,325.90
  6. Step 6: Final answer
    x = 121,504.39

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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.