Home / 225,816.81-311,640.96-130,329.64

Finding the Fourth Proportional to 225,816.81, 311,640.96 and 130,329.64

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Solution

The fourth proportional to 225,816.81, 311,640.96 and 130,329.64 is: 179,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,816.81 : 311,640.96 = 130,329.64 : x
  2. Step 2: Convert to fraction form
    225,816.81/311,640.96 = 130,329.64/x
  3. Step 3: Cross multiply
    225,816.81x = 311,640.96 × 130,329.64
  4. Step 4: Simplify right side
    225,816.81x = 40,616,054,126.05
  5. Step 5: Solve for x
    x = 40,616,054,126.05/225,816.81
  6. Step 6: Final answer
    x = 179,862.85

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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.