Home / 221,914.32-306,402.12-137,147.60

Finding the Fourth Proportional to 221,914.32, 306,402.12 and 137,147.60

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Solution

The fourth proportional to 221,914.32, 306,402.12 and 137,147.60 is: 189,362.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,914.32 : 306,402.12 = 137,147.60 : x
  2. Step 2: Convert to fraction form
    221,914.32/306,402.12 = 137,147.60/x
  3. Step 3: Cross multiply
    221,914.32x = 306,402.12 × 137,147.60
  4. Step 4: Simplify right side
    221,914.32x = 42,022,315,392.91
  5. Step 5: Solve for x
    x = 42,022,315,392.91/221,914.32
  6. Step 6: Final answer
    x = 189,362.79

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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.