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Finding the Fourth Proportional to 225,746.44, 311,533.59 and 123,781.21

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Solution

The fourth proportional to 225,746.44, 311,533.59 and 123,781.21 is: 170,819.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,746.44 : 311,533.59 = 123,781.21 : x
  2. Step 2: Convert to fraction form
    225,746.44/311,533.59 = 123,781.21/x
  3. Step 3: Cross multiply
    225,746.44x = 311,533.59 × 123,781.21
  4. Step 4: Simplify right side
    225,746.44x = 38,562,004,725.84
  5. Step 5: Solve for x
    x = 38,562,004,725.84/225,746.44
  6. Step 6: Final answer
    x = 170,819.99

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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.