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Finding the Fourth Proportional to 260,040.60, 390,027.42 and 82,549.62

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Solution

The fourth proportional to 260,040.60, 390,027.42 and 82,549.62 is: 123,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,040.60 : 390,027.42 = 82,549.62 : x
  2. Step 2: Convert to fraction form
    260,040.60/390,027.42 = 82,549.62/x
  3. Step 3: Cross multiply
    260,040.60x = 390,027.42 × 82,549.62
  4. Step 4: Simplify right side
    260,040.60x = 32,196,615,310.58
  5. Step 5: Solve for x
    x = 32,196,615,310.58/260,040.60
  6. Step 6: Final answer
    x = 123,813.80

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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.