Home / 216,828.20-325,388.10-98,438.60

Finding the Fourth Proportional to 216,828.20, 325,388.10 and 98,438.60

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Solution

The fourth proportional to 216,828.20, 325,388.10 and 98,438.60 is: 147,724.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,828.20 : 325,388.10 = 98,438.60 : x
  2. Step 2: Convert to fraction form
    216,828.20/325,388.10 = 98,438.60/x
  3. Step 3: Cross multiply
    216,828.20x = 325,388.10 × 98,438.60
  4. Step 4: Simplify right side
    216,828.20x = 32,030,749,020.66
  5. Step 5: Solve for x
    x = 32,030,749,020.66/216,828.20
  6. Step 6: Final answer
    x = 147,724.09

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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.