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Finding the Fourth Proportional to 225,683.28, 311,435.28 and 130,187.52

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Solution

The fourth proportional to 225,683.28, 311,435.28 and 130,187.52 is: 179,654.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,683.28 : 311,435.28 = 130,187.52 : x
  2. Step 2: Convert to fraction form
    225,683.28/311,435.28 = 130,187.52/x
  3. Step 3: Cross multiply
    225,683.28x = 311,435.28 × 130,187.52
  4. Step 4: Simplify right side
    225,683.28x = 40,544,986,743.71
  5. Step 5: Solve for x
    x = 40,544,986,743.71/225,683.28
  6. Step 6: Final answer
    x = 179,654.37

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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.