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Finding the Fourth Proportional to 303,367.90, 455,015.40 and 125,856.40

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Solution

The fourth proportional to 303,367.90, 455,015.40 and 125,856.40 is: 188,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,367.90 : 455,015.40 = 125,856.40 : x
  2. Step 2: Convert to fraction form
    303,367.90/455,015.40 = 125,856.40/x
  3. Step 3: Cross multiply
    303,367.90x = 455,015.40 × 125,856.40
  4. Step 4: Simplify right side
    303,367.90x = 57,266,600,188.56
  5. Step 5: Solve for x
    x = 57,266,600,188.56/303,367.90
  6. Step 6: Final answer
    x = 188,769.48

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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.