Home / 221,362.21-331,928.02-79,152.67

Finding the Fourth Proportional to 221,362.21, 331,928.02 and 79,152.67

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Solution

The fourth proportional to 221,362.21, 331,928.02 and 79,152.67 is: 118,687.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,362.21 : 331,928.02 = 79,152.67 : x
  2. Step 2: Convert to fraction form
    221,362.21/331,928.02 = 79,152.67/x
  3. Step 3: Cross multiply
    221,362.21x = 331,928.02 × 79,152.67
  4. Step 4: Simplify right side
    221,362.21x = 26,272,986,975.41
  5. Step 5: Solve for x
    x = 26,272,986,975.41/221,362.21
  6. Step 6: Final answer
    x = 118,687.77

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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.