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Finding the Fourth Proportional to 269,363.12, 371,720.99 and 154,649.16

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Solution

The fourth proportional to 269,363.12, 371,720.99 and 154,649.16 is: 213,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,363.12 : 371,720.99 = 154,649.16 : x
  2. Step 2: Convert to fraction form
    269,363.12/371,720.99 = 154,649.16/x
  3. Step 3: Cross multiply
    269,363.12x = 371,720.99 × 154,649.16
  4. Step 4: Simplify right side
    269,363.12x = 57,486,339,768.54
  5. Step 5: Solve for x
    x = 57,486,339,768.54/269,363.12
  6. Step 6: Final answer
    x = 213,415.78

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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.