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Finding the Fourth Proportional to 303,364.08, 418,639.44 and 167,399.28

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Solution

The fourth proportional to 303,364.08, 418,639.44 and 167,399.28 is: 231,009.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,364.08 : 418,639.44 = 167,399.28 : x
  2. Step 2: Convert to fraction form
    303,364.08/418,639.44 = 167,399.28/x
  3. Step 3: Cross multiply
    303,364.08x = 418,639.44 × 167,399.28
  4. Step 4: Simplify right side
    303,364.08x = 70,079,940,835.60
  5. Step 5: Solve for x
    x = 70,079,940,835.60/303,364.08
  6. Step 6: Final answer
    x = 231,009.36

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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.