Home / 259,664.20-389,423.40-82,225.60

Finding the Fourth Proportional to 259,664.20, 389,423.40 and 82,225.60

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Solution

The fourth proportional to 259,664.20, 389,423.40 and 82,225.60 is: 123,315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,664.20 : 389,423.40 = 82,225.60 : x
  2. Step 2: Convert to fraction form
    259,664.20/389,423.40 = 82,225.60/x
  3. Step 3: Cross multiply
    259,664.20x = 389,423.40 × 82,225.60
  4. Step 4: Simplify right side
    259,664.20x = 32,020,572,719.04
  5. Step 5: Solve for x
    x = 32,020,572,719.04/259,664.20
  6. Step 6: Final answer
    x = 123,315.32

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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.