Home / 285,433,423.20-428,150,134.80-199,339,981.20

Finding the Fourth Proportional to 285,433,423.20, 428,150,134.80 and 199,339,981.20

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Solution

The fourth proportional to 285,433,423.20, 428,150,134.80 and 199,339,981.20 is: 299,009,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,433,423.20 : 428,150,134.80 = 199,339,981.20 : x
  2. Step 2: Convert to fraction form
    285,433,423.20/428,150,134.80 = 199,339,981.20/x
  3. Step 3: Cross multiply
    285,433,423.20x = 428,150,134.80 × 199,339,981.20
  4. Step 4: Simplify right side
    285,433,423.20x = 85,347,439,821,809,456
  5. Step 5: Solve for x
    x = 85,347,439,821,809,456/285,433,423.20
  6. Step 6: Final answer
    x = 299,009,971.80

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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.