Home / 268,566.80-402,364.20-128,015.60

Finding the Fourth Proportional to 268,566.80, 402,364.20 and 128,015.60

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Solution

The fourth proportional to 268,566.80, 402,364.20 and 128,015.60 is: 191,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,566.80 : 402,364.20 = 128,015.60 : x
  2. Step 2: Convert to fraction form
    268,566.80/402,364.20 = 128,015.60/x
  3. Step 3: Cross multiply
    268,566.80x = 402,364.20 × 128,015.60
  4. Step 4: Simplify right side
    268,566.80x = 51,508,894,481.52
  5. Step 5: Solve for x
    x = 51,508,894,481.52/268,566.80
  6. Step 6: Final answer
    x = 191,791.74

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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.