Home / 260,116.20-390,247.20-127,000.80

Finding the Fourth Proportional to 260,116.20, 390,247.20 and 127,000.80

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Solution

The fourth proportional to 260,116.20, 390,247.20 and 127,000.80 is: 190,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,116.20 : 390,247.20 = 127,000.80 : x
  2. Step 2: Convert to fraction form
    260,116.20/390,247.20 = 127,000.80/x
  3. Step 3: Cross multiply
    260,116.20x = 390,247.20 × 127,000.80
  4. Step 4: Simplify right side
    260,116.20x = 49,561,706,597.76
  5. Step 5: Solve for x
    x = 49,561,706,597.76/260,116.20
  6. Step 6: Final answer
    x = 190,536.79

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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.