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Finding the Fourth Proportional to 213,192,002.90, 319,788,004.35 and 213,192,002.90

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Solution

The fourth proportional to 213,192,002.90, 319,788,004.35 and 213,192,002.90 is: 319,788,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,192,002.90 : 319,788,004.35 = 213,192,002.90 : x
  2. Step 2: Convert to fraction form
    213,192,002.90/319,788,004.35 = 213,192,002.90/x
  3. Step 3: Cross multiply
    213,192,002.90x = 319,788,004.35 × 213,192,002.90
  4. Step 4: Simplify right side
    213,192,002.90x = 68,176,245,150,770,416
  5. Step 5: Solve for x
    x = 68,176,245,150,770,416/213,192,002.90
  6. Step 6: Final answer
    x = 319,788,004.35

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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.