Home / 225,815.81-311,639.58-130,328.64

Finding the Fourth Proportional to 225,815.81, 311,639.58 and 130,328.64

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Solution

The fourth proportional to 225,815.81, 311,639.58 and 130,328.64 is: 179,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,815.81 : 311,639.58 = 130,328.64 : x
  2. Step 2: Convert to fraction form
    225,815.81/311,639.58 = 130,328.64/x
  3. Step 3: Cross multiply
    225,815.81x = 311,639.58 × 130,328.64
  4. Step 4: Simplify right side
    225,815.81x = 40,615,562,631.57
  5. Step 5: Solve for x
    x = 40,615,562,631.57/225,815.81
  6. Step 6: Final answer
    x = 179,861.47

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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.