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Finding the Fourth Proportional to 205,339, 308,131.38 and 88,603

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Solution

The fourth proportional to 205,339, 308,131.38 and 88,603 is: 132,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,339 : 308,131.38 = 88,603 : x
  2. Step 2: Convert to fraction form
    205,339/308,131.38 = 88,603/x
  3. Step 3: Cross multiply
    205,339x = 308,131.38 × 88,603
  4. Step 4: Simplify right side
    205,339x = 27,301,364,662.14
  5. Step 5: Solve for x
    x = 27,301,364,662.14/205,339
  6. Step 6: Final answer
    x = 132,957.52

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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.