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Finding the Fourth Proportional to 255,093.62, 382,653.39 and 86,633.78

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Solution

The fourth proportional to 255,093.62, 382,653.39 and 86,633.78 is: 129,955.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,093.62 : 382,653.39 = 86,633.78 : x
  2. Step 2: Convert to fraction form
    255,093.62/382,653.39 = 86,633.78/x
  3. Step 3: Cross multiply
    255,093.62x = 382,653.39 × 86,633.78
  4. Step 4: Simplify right side
    255,093.62x = 33,150,709,605.51
  5. Step 5: Solve for x
    x = 33,150,709,605.51/255,093.62
  6. Step 6: Final answer
    x = 129,955.07

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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.