Home / 260,569.20-390,983.40-102,802.80

Finding the Fourth Proportional to 260,569.20, 390,983.40 and 102,802.80

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Solution

The fourth proportional to 260,569.20, 390,983.40 and 102,802.80 is: 154,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,569.20 : 390,983.40 = 102,802.80 : x
  2. Step 2: Convert to fraction form
    260,569.20/390,983.40 = 102,802.80/x
  3. Step 3: Cross multiply
    260,569.20x = 390,983.40 × 102,802.80
  4. Step 4: Simplify right side
    260,569.20x = 40,194,188,273.52
  5. Step 5: Solve for x
    x = 40,194,188,273.52/260,569.20
  6. Step 6: Final answer
    x = 154,255.33

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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.