Home / 221,998.41-306,351.59-121,394.25

Finding the Fourth Proportional to 221,998.41, 306,351.59 and 121,394.25

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Solution

The fourth proportional to 221,998.41, 306,351.59 and 121,394.25 is: 167,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,998.41 : 306,351.59 = 121,394.25 : x
  2. Step 2: Convert to fraction form
    221,998.41/306,351.59 = 121,394.25/x
  3. Step 3: Cross multiply
    221,998.41x = 306,351.59 × 121,394.25
  4. Step 4: Simplify right side
    221,998.41x = 37,189,320,897.39
  5. Step 5: Solve for x
    x = 37,189,320,897.39/221,998.41
  6. Step 6: Final answer
    x = 167,520.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.