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Finding the Fourth Proportional to 225,683.80, 311,476.80 and 130,171.84

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Solution

The fourth proportional to 225,683.80, 311,476.80 and 130,171.84 is: 179,656.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,683.80 : 311,476.80 = 130,171.84 : x
  2. Step 2: Convert to fraction form
    225,683.80/311,476.80 = 130,171.84/x
  3. Step 3: Cross multiply
    225,683.80x = 311,476.80 × 130,171.84
  4. Step 4: Simplify right side
    225,683.80x = 40,545,508,173.31
  5. Step 5: Solve for x
    x = 40,545,508,173.31/225,683.80
  6. Step 6: Final answer
    x = 179,656.26

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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.