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Finding the Fourth Proportional to 225,625.29, 311,371.52 and 128,844.93

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Solution

The fourth proportional to 225,625.29, 311,371.52 and 128,844.93 is: 177,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,625.29 : 311,371.52 = 128,844.93 : x
  2. Step 2: Convert to fraction form
    225,625.29/311,371.52 = 128,844.93/x
  3. Step 3: Cross multiply
    225,625.29x = 311,371.52 × 128,844.93
  4. Step 4: Simplify right side
    225,625.29x = 40,118,641,698.39
  5. Step 5: Solve for x
    x = 40,118,641,698.39/225,625.29
  6. Step 6: Final answer
    x = 177,810.93

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1.5x scale

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.