Home / 221,321.26-305,354.10-130,709.30

Finding the Fourth Proportional to 221,321.26, 305,354.10 and 130,709.30

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Solution

The fourth proportional to 221,321.26, 305,354.10 and 130,709.30 is: 180,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,321.26 : 305,354.10 = 130,709.30 : x
  2. Step 2: Convert to fraction form
    221,321.26/305,354.10 = 130,709.30/x
  3. Step 3: Cross multiply
    221,321.26x = 305,354.10 × 130,709.30
  4. Step 4: Simplify right side
    221,321.26x = 39,912,619,626.52
  5. Step 5: Solve for x
    x = 39,912,619,626.52/221,321.26
  6. Step 6: Final answer
    x = 180,337.94

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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.