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Finding the Fourth Proportional to 255,993.23, 384,488.14 and 208,643.31

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Solution

The fourth proportional to 255,993.23, 384,488.14 and 208,643.31 is: 313,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,993.23 : 384,488.14 = 208,643.31 : x
  2. Step 2: Convert to fraction form
    255,993.23/384,488.14 = 208,643.31/x
  3. Step 3: Cross multiply
    255,993.23x = 384,488.14 × 208,643.31
  4. Step 4: Simplify right side
    255,993.23x = 80,220,878,706.95
  5. Step 5: Solve for x
    x = 80,220,878,706.95/255,993.23
  6. Step 6: Final answer
    x = 313,371.09

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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.