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Finding the Fourth Proportional to 303,318.45, 455,141.70 and 125,843.40

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Solution

The fourth proportional to 303,318.45, 455,141.70 and 125,843.40 is: 188,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,318.45 : 455,141.70 = 125,843.40 : x
  2. Step 2: Convert to fraction form
    303,318.45/455,141.70 = 125,843.40/x
  3. Step 3: Cross multiply
    303,318.45x = 455,141.70 × 125,843.40
  4. Step 4: Simplify right side
    303,318.45x = 57,276,579,009.78
  5. Step 5: Solve for x
    x = 57,276,579,009.78/303,318.45
  6. Step 6: Final answer
    x = 188,833.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.