Home / 221,586.21-305,788.71-130,974.86

Finding the Fourth Proportional to 221,586.21, 305,788.71 and 130,974.86

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Solution

The fourth proportional to 221,586.21, 305,788.71 and 130,974.86 is: 180,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,586.21 : 305,788.71 = 130,974.86 : x
  2. Step 2: Convert to fraction form
    221,586.21/305,788.71 = 130,974.86/x
  3. Step 3: Cross multiply
    221,586.21x = 305,788.71 × 130,974.86
  4. Step 4: Simplify right side
    221,586.21x = 40,050,631,952.89
  5. Step 5: Solve for x
    x = 40,050,631,952.89/221,586.21
  6. Step 6: Final answer
    x = 180,745.15

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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.