Home / 221,615.31-305,788.52-130,986.03

Finding the Fourth Proportional to 221,615.31, 305,788.52 and 130,986.03

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Solution

The fourth proportional to 221,615.31, 305,788.52 and 130,986.03 is: 180,736.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,615.31 : 305,788.52 = 130,986.03 : x
  2. Step 2: Convert to fraction form
    221,615.31/305,788.52 = 130,986.03/x
  3. Step 3: Cross multiply
    221,615.31x = 305,788.52 × 130,986.03
  4. Step 4: Simplify right side
    221,615.31x = 40,054,023,599.45
  5. Step 5: Solve for x
    x = 40,054,023,599.45/221,615.31
  6. Step 6: Final answer
    x = 180,736.72

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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.