Home / 221,193.52-305,268.96-130,579.36

Finding the Fourth Proportional to 221,193.52, 305,268.96 and 130,579.36

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Solution

The fourth proportional to 221,193.52, 305,268.96 and 130,579.36 is: 180,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,193.52 : 305,268.96 = 130,579.36 : x
  2. Step 2: Convert to fraction form
    221,193.52/305,268.96 = 130,579.36/x
  3. Step 3: Cross multiply
    221,193.52x = 305,268.96 × 130,579.36
  4. Step 4: Simplify right side
    221,193.52x = 39,861,825,424.67
  5. Step 5: Solve for x
    x = 39,861,825,424.67/221,193.52
  6. Step 6: Final answer
    x = 180,212.45

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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.