Home / 426,821.24-640,149.71-199,054.33

Finding the Fourth Proportional to 426,821.24, 640,149.71 and 199,054.33

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Solution

The fourth proportional to 426,821.24, 640,149.71 and 199,054.33 is: 298,543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,821.24 : 640,149.71 = 199,054.33 : x
  2. Step 2: Convert to fraction form
    426,821.24/640,149.71 = 199,054.33/x
  3. Step 3: Cross multiply
    426,821.24x = 640,149.71 × 199,054.33
  4. Step 4: Simplify right side
    426,821.24x = 127,424,570,628.47
  5. Step 5: Solve for x
    x = 127,424,570,628.47/426,821.24
  6. Step 6: Final answer
    x = 298,543.18

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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.