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Finding the Fourth Proportional to 223,855,157.90, 308,915,978.96 and 122,013,713.62

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Solution

The fourth proportional to 223,855,157.90, 308,915,978.96 and 122,013,713.62 is: 168,376,668.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,855,157.90 : 308,915,978.96 = 122,013,713.62 : x
  2. Step 2: Convert to fraction form
    223,855,157.90/308,915,978.96 = 122,013,713.62/x
  3. Step 3: Cross multiply
    223,855,157.90x = 308,915,978.96 × 122,013,713.62
  4. Step 4: Simplify right side
    223,855,157.90x = 37,691,985,788,433,976
  5. Step 5: Solve for x
    x = 37,691,985,788,433,976/223,855,157.90
  6. Step 6: Final answer
    x = 168,376,668.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.