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Finding the Fourth Proportional to 303,378.45, 455,231.70 and 125,903.40

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Solution

The fourth proportional to 303,378.45, 455,231.70 and 125,903.40 is: 188,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,378.45 : 455,231.70 = 125,903.40 : x
  2. Step 2: Convert to fraction form
    303,378.45/455,231.70 = 125,903.40/x
  3. Step 3: Cross multiply
    303,378.45x = 455,231.70 × 125,903.40
  4. Step 4: Simplify right side
    303,378.45x = 57,315,218,817.78
  5. Step 5: Solve for x
    x = 57,315,218,817.78/303,378.45
  6. Step 6: Final answer
    x = 188,923.17

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1.5x scale

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.