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Finding the Fourth Proportional to 303,065.20, 455,472.60 and 297,816.40

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Solution

The fourth proportional to 303,065.20, 455,472.60 and 297,816.40 is: 447,584.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,065.20 : 455,472.60 = 297,816.40 : x
  2. Step 2: Convert to fraction form
    303,065.20/455,472.60 = 297,816.40/x
  3. Step 3: Cross multiply
    303,065.20x = 455,472.60 × 297,816.40
  4. Step 4: Simplify right side
    303,065.20x = 135,647,210,030.64
  5. Step 5: Solve for x
    x = 135,647,210,030.64/303,065.20
  6. Step 6: Final answer
    x = 447,584.25

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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.