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Finding the Fourth Proportional to 489,897.44, 734,892.38 and 190,400.94

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Solution

The fourth proportional to 489,897.44, 734,892.38 and 190,400.94 is: 285,619.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,897.44 : 734,892.38 = 190,400.94 : x
  2. Step 2: Convert to fraction form
    489,897.44/734,892.38 = 190,400.94/x
  3. Step 3: Cross multiply
    489,897.44x = 734,892.38 × 190,400.94
  4. Step 4: Simplify right side
    489,897.44x = 139,924,198,998.83
  5. Step 5: Solve for x
    x = 139,924,198,998.83/489,897.44
  6. Step 6: Final answer
    x = 285,619.37

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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.