Home / 260,255.55-390,383.33-127,221.15

Finding the Fourth Proportional to 260,255.55, 390,383.33 and 127,221.15

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Solution

The fourth proportional to 260,255.55, 390,383.33 and 127,221.15 is: 190,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,255.55 : 390,383.33 = 127,221.15 : x
  2. Step 2: Convert to fraction form
    260,255.55/390,383.33 = 127,221.15/x
  3. Step 3: Cross multiply
    260,255.55x = 390,383.33 × 127,221.15
  4. Step 4: Simplify right side
    260,255.55x = 49,665,015,547.32
  5. Step 5: Solve for x
    x = 49,665,015,547.32/260,255.55
  6. Step 6: Final answer
    x = 190,831.73

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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.