Home / 221,010.32-305,030.81-130,388.43

Finding the Fourth Proportional to 221,010.32, 305,030.81 and 130,388.43

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Solution

The fourth proportional to 221,010.32, 305,030.81 and 130,388.43 is: 179,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,010.32 : 305,030.81 = 130,388.43 : x
  2. Step 2: Convert to fraction form
    221,010.32/305,030.81 = 130,388.43/x
  3. Step 3: Cross multiply
    221,010.32x = 305,030.81 × 130,388.43
  4. Step 4: Simplify right side
    221,010.32x = 39,772,489,887.36
  5. Step 5: Solve for x
    x = 39,772,489,887.36/221,010.32
  6. Step 6: Final answer
    x = 179,957.61

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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.