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Finding the Fourth Proportional to 225,636.69, 311,382.27 and 123,671.91

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Solution

The fourth proportional to 225,636.69, 311,382.27 and 123,671.91 is: 170,669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,636.69 : 311,382.27 = 123,671.91 : x
  2. Step 2: Convert to fraction form
    225,636.69/311,382.27 = 123,671.91/x
  3. Step 3: Cross multiply
    225,636.69x = 311,382.27 × 123,671.91
  4. Step 4: Simplify right side
    225,636.69x = 38,509,240,071.04
  5. Step 5: Solve for x
    x = 38,509,240,071.04/225,636.69
  6. Step 6: Final answer
    x = 170,669.23

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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.