Home / 260,540.12-390,678.96-127,220.60

Finding the Fourth Proportional to 260,540.12, 390,678.96 and 127,220.60

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Solution

The fourth proportional to 260,540.12, 390,678.96 and 127,220.60 is: 190,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,540.12 : 390,678.96 = 127,220.60 : x
  2. Step 2: Convert to fraction form
    260,540.12/390,678.96 = 127,220.60/x
  3. Step 3: Cross multiply
    260,540.12x = 390,678.96 × 127,220.60
  4. Step 4: Simplify right side
    260,540.12x = 49,702,411,698.58
  5. Step 5: Solve for x
    x = 49,702,411,698.58/260,540.12
  6. Step 6: Final answer
    x = 190,766.83

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1.5x scale

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.