Home / 216,788.40-324,745.20-145,929.60

Finding the Fourth Proportional to 216,788.40, 324,745.20 and 145,929.60

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Solution

The fourth proportional to 216,788.40, 324,745.20 and 145,929.60 is: 218,599.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,788.40 : 324,745.20 = 145,929.60 : x
  2. Step 2: Convert to fraction form
    216,788.40/324,745.20 = 145,929.60/x
  3. Step 3: Cross multiply
    216,788.40x = 324,745.20 × 145,929.60
  4. Step 4: Simplify right side
    216,788.40x = 47,389,937,137.92
  5. Step 5: Solve for x
    x = 47,389,937,137.92/216,788.40
  6. Step 6: Final answer
    x = 218,599.97

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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.