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Finding the Fourth Proportional to 512,515.37, 768,775.80 and 336,139.28

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Solution

The fourth proportional to 512,515.37, 768,775.80 and 336,139.28 is: 504,210.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,515.37 : 768,775.80 = 336,139.28 : x
  2. Step 2: Convert to fraction form
    512,515.37/768,775.80 = 336,139.28/x
  3. Step 3: Cross multiply
    512,515.37x = 768,775.80 × 336,139.28
  4. Step 4: Simplify right side
    512,515.37x = 258,415,743,893.42
  5. Step 5: Solve for x
    x = 258,415,743,893.42/512,515.37
  6. Step 6: Final answer
    x = 504,210.72

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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.