Home / 225,619.02-311,362.91-128,838.66

Finding the Fourth Proportional to 225,619.02, 311,362.91 and 128,838.66

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Solution

The fourth proportional to 225,619.02, 311,362.91 and 128,838.66 is: 177,802.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,619.02 : 311,362.91 = 128,838.66 : x
  2. Step 2: Convert to fraction form
    225,619.02/311,362.91 = 128,838.66/x
  3. Step 3: Cross multiply
    225,619.02x = 311,362.91 × 128,838.66
  4. Step 4: Simplify right side
    225,619.02x = 40,115,579,453.91
  5. Step 5: Solve for x
    x = 40,115,579,453.91/225,619.02
  6. Step 6: Final answer
    x = 177,802.29

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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.