Home / 260,021.20-389,916.60-119,822.80

Finding the Fourth Proportional to 260,021.20, 389,916.60 and 119,822.80

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Solution

The fourth proportional to 260,021.20, 389,916.60 and 119,822.80 is: 179,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,021.20 : 389,916.60 = 119,822.80 : x
  2. Step 2: Convert to fraction form
    260,021.20/389,916.60 = 119,822.80/x
  3. Step 3: Cross multiply
    260,021.20x = 389,916.60 × 119,822.80
  4. Step 4: Simplify right side
    260,021.20x = 46,720,898,778.48
  5. Step 5: Solve for x
    x = 46,720,898,778.48/260,021.20
  6. Step 6: Final answer
    x = 179,681.11

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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.