Home / 219,847.20-329,880.15-86,731.80

Finding the Fourth Proportional to 219,847.20, 329,880.15 and 86,731.80

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Solution

The fourth proportional to 219,847.20, 329,880.15 and 86,731.80 is: 130,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,847.20 : 329,880.15 = 86,731.80 : x
  2. Step 2: Convert to fraction form
    219,847.20/329,880.15 = 86,731.80/x
  3. Step 3: Cross multiply
    219,847.20x = 329,880.15 × 86,731.80
  4. Step 4: Simplify right side
    219,847.20x = 28,611,099,193.77
  5. Step 5: Solve for x
    x = 28,611,099,193.77/219,847.20
  6. Step 6: Final answer
    x = 130,140.84

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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.