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Finding the Fourth Proportional to 251,946,978.96, 347,694,200.28 and 147,515,279.52

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Solution

The fourth proportional to 251,946,978.96, 347,694,200.28 and 147,515,279.52 is: 203,575,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,946,978.96 : 347,694,200.28 = 147,515,279.52 : x
  2. Step 2: Convert to fraction form
    251,946,978.96/347,694,200.28 = 147,515,279.52/x
  3. Step 3: Cross multiply
    251,946,978.96x = 347,694,200.28 × 147,515,279.52
  4. Step 4: Simplify right side
    251,946,978.96x = 51,290,207,141,787,064
  5. Step 5: Solve for x
    x = 51,290,207,141,787,064/251,946,978.96
  6. Step 6: Final answer
    x = 203,575,400.48

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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.