Home / 221,010.44-305,031.09-130,388.67

Finding the Fourth Proportional to 221,010.44, 305,031.09 and 130,388.67

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Solution

The fourth proportional to 221,010.44, 305,031.09 and 130,388.67 is: 179,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,010.44 : 305,031.09 = 130,388.67 : x
  2. Step 2: Convert to fraction form
    221,010.44/305,031.09 = 130,388.67/x
  3. Step 3: Cross multiply
    221,010.44x = 305,031.09 × 130,388.67
  4. Step 4: Simplify right side
    221,010.44x = 39,772,598,133.75
  5. Step 5: Solve for x
    x = 39,772,598,133.75/221,010.44
  6. Step 6: Final answer
    x = 179,958.01

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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.