Home / 285,433,417.20-428,150,125.80-199,339,975.20

Finding the Fourth Proportional to 285,433,417.20, 428,150,125.80 and 199,339,975.20

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Solution

The fourth proportional to 285,433,417.20, 428,150,125.80 and 199,339,975.20 is: 299,009,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,433,417.20 : 428,150,125.80 = 199,339,975.20 : x
  2. Step 2: Convert to fraction form
    285,433,417.20/428,150,125.80 = 199,339,975.20/x
  3. Step 3: Cross multiply
    285,433,417.20x = 428,150,125.80 × 199,339,975.20
  4. Step 4: Simplify right side
    285,433,417.20x = 85,347,435,458,848,880
  5. Step 5: Solve for x
    x = 85,347,435,458,848,880/285,433,417.20
  6. Step 6: Final answer
    x = 299,009,962.80

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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.