Home / 268,865.58-403,298.37-81,878.70

Finding the Fourth Proportional to 268,865.58, 403,298.37 and 81,878.70

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Solution

The fourth proportional to 268,865.58, 403,298.37 and 81,878.70 is: 122,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,865.58 : 403,298.37 = 81,878.70 : x
  2. Step 2: Convert to fraction form
    268,865.58/403,298.37 = 81,878.70/x
  3. Step 3: Cross multiply
    268,865.58x = 403,298.37 × 81,878.70
  4. Step 4: Simplify right side
    268,865.58x = 33,021,546,247.72
  5. Step 5: Solve for x
    x = 33,021,546,247.72/268,865.58
  6. Step 6: Final answer
    x = 122,818.05

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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.