Home / 260,575.20-390,992.40-102,808.80

Finding the Fourth Proportional to 260,575.20, 390,992.40 and 102,808.80

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Solution

The fourth proportional to 260,575.20, 390,992.40 and 102,808.80 is: 154,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,575.20 : 390,992.40 = 102,808.80 : x
  2. Step 2: Convert to fraction form
    260,575.20/390,992.40 = 102,808.80/x
  3. Step 3: Cross multiply
    260,575.20x = 390,992.40 × 102,808.80
  4. Step 4: Simplify right side
    260,575.20x = 40,197,459,453.12
  5. Step 5: Solve for x
    x = 40,197,459,453.12/260,575.20
  6. Step 6: Final answer
    x = 154,264.33

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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.