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Finding the Fourth Proportional to 209,371.84, 288,837.84 and 124,440.64

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Solution

The fourth proportional to 209,371.84, 288,837.84 and 124,440.64 is: 171,671.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,371.84 : 288,837.84 = 124,440.64 : x
  2. Step 2: Convert to fraction form
    209,371.84/288,837.84 = 124,440.64/x
  3. Step 3: Cross multiply
    209,371.84x = 288,837.84 × 124,440.64
  4. Step 4: Simplify right side
    209,371.84x = 35,943,165,665.82
  5. Step 5: Solve for x
    x = 35,943,165,665.82/209,371.84
  6. Step 6: Final answer
    x = 171,671.44

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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.