Home / 260,968.11-390,961.17-204,637.20

Finding the Fourth Proportional to 260,968.11, 390,961.17 and 204,637.20

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Solution

The fourth proportional to 260,968.11, 390,961.17 and 204,637.20 is: 306,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,968.11 : 390,961.17 = 204,637.20 : x
  2. Step 2: Convert to fraction form
    260,968.11/390,961.17 = 204,637.20/x
  3. Step 3: Cross multiply
    260,968.11x = 390,961.17 × 204,637.20
  4. Step 4: Simplify right side
    260,968.11x = 80,005,199,137.52
  5. Step 5: Solve for x
    x = 80,005,199,137.52/260,968.11
  6. Step 6: Final answer
    x = 306,570.79

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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.