Home / 221,324.11-305,418.43-130,709.27

Finding the Fourth Proportional to 221,324.11, 305,418.43 and 130,709.27

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Solution

The fourth proportional to 221,324.11, 305,418.43 and 130,709.27 is: 180,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,324.11 : 305,418.43 = 130,709.27 : x
  2. Step 2: Convert to fraction form
    221,324.11/305,418.43 = 130,709.27/x
  3. Step 3: Cross multiply
    221,324.11x = 305,418.43 × 130,709.27
  4. Step 4: Simplify right side
    221,324.11x = 39,921,020,466.62
  5. Step 5: Solve for x
    x = 39,921,020,466.62/221,324.11
  6. Step 6: Final answer
    x = 180,373.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.