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Finding the Fourth Proportional to 489,853.22, 734,826.22 and 190,356.90

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Solution

The fourth proportional to 489,853.22, 734,826.22 and 190,356.90 is: 285,553.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,853.22 : 734,826.22 = 190,356.90 : x
  2. Step 2: Convert to fraction form
    489,853.22/734,826.22 = 190,356.90/x
  3. Step 3: Cross multiply
    489,853.22x = 734,826.22 × 190,356.90
  4. Step 4: Simplify right side
    489,853.22x = 139,879,238,812.09
  5. Step 5: Solve for x
    x = 139,879,238,812.09/489,853.22
  6. Step 6: Final answer
    x = 285,553.37

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1.5x scale

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.