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Finding the Fourth Proportional to 489,908.12, 734,673.24 and 190,349.26

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Solution

The fourth proportional to 489,908.12, 734,673.24 and 190,349.26 is: 285,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,908.12 : 734,673.24 = 190,349.26 : x
  2. Step 2: Convert to fraction form
    489,908.12/734,673.24 = 190,349.26/x
  3. Step 3: Cross multiply
    489,908.12x = 734,673.24 × 190,349.26
  4. Step 4: Simplify right side
    489,908.12x = 139,844,505,739.12
  5. Step 5: Solve for x
    x = 139,844,505,739.12/489,908.12
  6. Step 6: Final answer
    x = 285,450.48

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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.