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Finding the Fourth Proportional to 303,312.40, 454,968.60 and 299,375.80

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Solution

The fourth proportional to 303,312.40, 454,968.60 and 299,375.80 is: 449,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,312.40 : 454,968.60 = 299,375.80 : x
  2. Step 2: Convert to fraction form
    303,312.40/454,968.60 = 299,375.80/x
  3. Step 3: Cross multiply
    303,312.40x = 454,968.60 × 299,375.80
  4. Step 4: Simplify right side
    303,312.40x = 136,206,588,599.88
  5. Step 5: Solve for x
    x = 136,206,588,599.88/303,312.40
  6. Step 6: Final answer
    x = 449,063.70

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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.