Home / 285,433,347.70-428,150,021.55-199,339,905.70

Finding the Fourth Proportional to 285,433,347.70, 428,150,021.55 and 199,339,905.70

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Solution

The fourth proportional to 285,433,347.70, 428,150,021.55 and 199,339,905.70 is: 299,009,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,433,347.70 : 428,150,021.55 = 199,339,905.70 : x
  2. Step 2: Convert to fraction form
    285,433,347.70/428,150,021.55 = 199,339,905.70/x
  3. Step 3: Cross multiply
    285,433,347.70x = 428,150,021.55 × 199,339,905.70
  4. Step 4: Simplify right side
    285,433,347.70x = 85,347,384,921,229,968
  5. Step 5: Solve for x
    x = 85,347,384,921,229,968/285,433,347.70
  6. Step 6: Final answer
    x = 299,009,858.55

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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.