Home / 213,259.37-321,154.61-189,902.21

Finding the Fourth Proportional to 213,259.37, 321,154.61 and 189,902.21

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Solution

The fourth proportional to 213,259.37, 321,154.61 and 189,902.21 is: 285,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,259.37 : 321,154.61 = 189,902.21 : x
  2. Step 2: Convert to fraction form
    213,259.37/321,154.61 = 189,902.21/x
  3. Step 3: Cross multiply
    213,259.37x = 321,154.61 × 189,902.21
  4. Step 4: Simplify right side
    213,259.37x = 60,987,967,635.40
  5. Step 5: Solve for x
    x = 60,987,967,635.40/213,259.37
  6. Step 6: Final answer
    x = 285,980.26

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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.