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Finding the Fourth Proportional to 303,608.40, 455,704.20 and 154,017.60

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Solution

The fourth proportional to 303,608.40, 455,704.20 and 154,017.60 is: 231,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,608.40 : 455,704.20 = 154,017.60 : x
  2. Step 2: Convert to fraction form
    303,608.40/455,704.20 = 154,017.60/x
  3. Step 3: Cross multiply
    303,608.40x = 455,704.20 × 154,017.60
  4. Step 4: Simplify right side
    303,608.40x = 70,186,467,193.92
  5. Step 5: Solve for x
    x = 70,186,467,193.92/303,608.40
  6. Step 6: Final answer
    x = 231,174.33

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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.