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Finding the Fourth Proportional to 303,795.20, 455,036.70 and 264,429.20

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Solution

The fourth proportional to 303,795.20, 455,036.70 and 264,429.20 is: 396,072.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,795.20 : 455,036.70 = 264,429.20 : x
  2. Step 2: Convert to fraction form
    303,795.20/455,036.70 = 264,429.20/x
  3. Step 3: Cross multiply
    303,795.20x = 455,036.70 × 264,429.20
  4. Step 4: Simplify right side
    303,795.20x = 120,324,990,551.64
  5. Step 5: Solve for x
    x = 120,324,990,551.64/303,795.20
  6. Step 6: Final answer
    x = 396,072.72

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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.