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Finding the Fourth Proportional to 303,326.40, 454,989.60 and 299,389.80

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Solution

The fourth proportional to 303,326.40, 454,989.60 and 299,389.80 is: 449,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,326.40 : 454,989.60 = 299,389.80 : x
  2. Step 2: Convert to fraction form
    303,326.40/454,989.60 = 299,389.80/x
  3. Step 3: Cross multiply
    303,326.40x = 454,989.60 × 299,389.80
  4. Step 4: Simplify right side
    303,326.40x = 136,219,245,346.08
  5. Step 5: Solve for x
    x = 136,219,245,346.08/303,326.40
  6. Step 6: Final answer
    x = 449,084.70

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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.