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Finding the Fourth Proportional to 303,815.40, 454,410.90 and 256,576.20

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Solution

The fourth proportional to 303,815.40, 454,410.90 and 256,576.20 is: 383,756.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,815.40 : 454,410.90 = 256,576.20 : x
  2. Step 2: Convert to fraction form
    303,815.40/454,410.90 = 256,576.20/x
  3. Step 3: Cross multiply
    303,815.40x = 454,410.90 × 256,576.20
  4. Step 4: Simplify right side
    303,815.40x = 116,591,021,960.58
  5. Step 5: Solve for x
    x = 116,591,021,960.58/303,815.40
  6. Step 6: Final answer
    x = 383,756.13

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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.