Home / 213,598,778.16-321,999,105.96-199,361,350.68

Finding the Fourth Proportional to 213,598,778.16, 321,999,105.96 and 199,361,350.68

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Solution

The fourth proportional to 213,598,778.16, 321,999,105.96 and 199,361,350.68 is: 300,536,254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,598,778.16 : 321,999,105.96 = 199,361,350.68 : x
  2. Step 2: Convert to fraction form
    213,598,778.16/321,999,105.96 = 199,361,350.68/x
  3. Step 3: Cross multiply
    213,598,778.16x = 321,999,105.96 × 199,361,350.68
  4. Step 4: Simplify right side
    213,598,778.16x = 64,194,176,681,938,040
  5. Step 5: Solve for x
    x = 64,194,176,681,938,040/213,598,778.16
  6. Step 6: Final answer
    x = 300,536,254.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.