Home / 280,664.10-420,996.15-192,090.60

Finding the Fourth Proportional to 280,664.10, 420,996.15 and 192,090.60

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Solution

The fourth proportional to 280,664.10, 420,996.15 and 192,090.60 is: 288,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,664.10 : 420,996.15 = 192,090.60 : x
  2. Step 2: Convert to fraction form
    280,664.10/420,996.15 = 192,090.60/x
  3. Step 3: Cross multiply
    280,664.10x = 420,996.15 × 192,090.60
  4. Step 4: Simplify right side
    280,664.10x = 80,869,403,051.19
  5. Step 5: Solve for x
    x = 80,869,403,051.19/280,664.10
  6. Step 6: Final answer
    x = 288,135.90

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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.