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Finding the Fourth Proportional to 342,072.37, 512,891.20 and 300,036.85

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Solution

The fourth proportional to 342,072.37, 512,891.20 and 300,036.85 is: 449,864.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,072.37 : 512,891.20 = 300,036.85 : x
  2. Step 2: Convert to fraction form
    342,072.37/512,891.20 = 300,036.85/x
  3. Step 3: Cross multiply
    342,072.37x = 512,891.20 × 300,036.85
  4. Step 4: Simplify right side
    342,072.37x = 153,886,260,040.72
  5. Step 5: Solve for x
    x = 153,886,260,040.72/342,072.37
  6. Step 6: Final answer
    x = 449,864.63

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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.