Home / 268,338.07-402,579.69-90,845.09

Finding the Fourth Proportional to 268,338.07, 402,579.69 and 90,845.09

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Solution

The fourth proportional to 268,338.07, 402,579.69 and 90,845.09 is: 136,292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,338.07 : 402,579.69 = 90,845.09 : x
  2. Step 2: Convert to fraction form
    268,338.07/402,579.69 = 90,845.09/x
  3. Step 3: Cross multiply
    268,338.07x = 402,579.69 × 90,845.09
  4. Step 4: Simplify right side
    268,338.07x = 36,572,388,170.22
  5. Step 5: Solve for x
    x = 36,572,388,170.22/268,338.07
  6. Step 6: Final answer
    x = 136,292.21

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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.