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Finding the Fourth Proportional to 489,937.57, 734,620.35 and 190,067.77

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Solution

The fourth proportional to 489,937.57, 734,620.35 and 190,067.77 is: 284,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,937.57 : 734,620.35 = 190,067.77 : x
  2. Step 2: Convert to fraction form
    489,937.57/734,620.35 = 190,067.77/x
  3. Step 3: Cross multiply
    489,937.57x = 734,620.35 × 190,067.77
  4. Step 4: Simplify right side
    489,937.57x = 139,627,651,721.12
  5. Step 5: Solve for x
    x = 139,627,651,721.12/489,937.57
  6. Step 6: Final answer
    x = 284,990.70

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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.