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Finding the Fourth Proportional to 260,079.06, 390,132.09 and 82,599.96

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Solution

The fourth proportional to 260,079.06, 390,132.09 and 82,599.96 is: 123,904.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079.06 : 390,132.09 = 82,599.96 : x
  2. Step 2: Convert to fraction form
    260,079.06/390,132.09 = 82,599.96/x
  3. Step 3: Cross multiply
    260,079.06x = 390,132.09 × 82,599.96
  4. Step 4: Simplify right side
    260,079.06x = 32,224,895,028.72
  5. Step 5: Solve for x
    x = 32,224,895,028.72/260,079.06
  6. Step 6: Final answer
    x = 123,904.23

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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.