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Finding the Fourth Proportional to 260,799.40, 390,615.90 and 201,442.60

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Solution

The fourth proportional to 260,799.40, 390,615.90 and 201,442.60 is: 301,713.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,799.40 : 390,615.90 = 201,442.60 : x
  2. Step 2: Convert to fraction form
    260,799.40/390,615.90 = 201,442.60/x
  3. Step 3: Cross multiply
    260,799.40x = 390,615.90 × 201,442.60
  4. Step 4: Simplify right side
    260,799.40x = 78,686,682,497.34
  5. Step 5: Solve for x
    x = 78,686,682,497.34/260,799.40
  6. Step 6: Final answer
    x = 301,713.43

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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.