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Finding the Fourth Proportional to 225,812.40, 311,661.72 and 130,305.84

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Solution

The fourth proportional to 225,812.40, 311,661.72 and 130,305.84 is: 179,845.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,812.40 : 311,661.72 = 130,305.84 : x
  2. Step 2: Convert to fraction form
    225,812.40/311,661.72 = 130,305.84/x
  3. Step 3: Cross multiply
    225,812.40x = 311,661.72 × 130,305.84
  4. Step 4: Simplify right side
    225,812.40x = 40,611,342,220.44
  5. Step 5: Solve for x
    x = 40,611,342,220.44/225,812.40
  6. Step 6: Final answer
    x = 179,845.49

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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.