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Finding the Fourth Proportional to 255,519, 352,427.32 and 187,513

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Solution

The fourth proportional to 255,519, 352,427.32 and 187,513 is: 258,629.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,519 : 352,427.32 = 187,513 : x
  2. Step 2: Convert to fraction form
    255,519/352,427.32 = 187,513/x
  3. Step 3: Cross multiply
    255,519x = 352,427.32 × 187,513
  4. Step 4: Simplify right side
    255,519x = 66,084,704,055.16
  5. Step 5: Solve for x
    x = 66,084,704,055.16/255,519
  6. Step 6: Final answer
    x = 258,629.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.