Home / 268,711.78-403,137.39-79,178.85

Finding the Fourth Proportional to 268,711.78, 403,137.39 and 79,178.85

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Solution

The fourth proportional to 268,711.78, 403,137.39 and 79,178.85 is: 118,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,711.78 : 403,137.39 = 79,178.85 : x
  2. Step 2: Convert to fraction form
    268,711.78/403,137.39 = 79,178.85/x
  3. Step 3: Cross multiply
    268,711.78x = 403,137.39 × 79,178.85
  4. Step 4: Simplify right side
    268,711.78x = 31,919,954,783.74
  5. Step 5: Solve for x
    x = 31,919,954,783.74/268,711.78
  6. Step 6: Final answer
    x = 118,788.82

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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.