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Finding the Fourth Proportional to 486,620.51, 671,438.90 and 271,727.51

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Solution

The fourth proportional to 486,620.51, 671,438.90 and 271,727.51 is: 374,929.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,620.51 : 671,438.90 = 271,727.51 : x
  2. Step 2: Convert to fraction form
    486,620.51/671,438.90 = 271,727.51/x
  3. Step 3: Cross multiply
    486,620.51x = 671,438.90 × 271,727.51
  4. Step 4: Simplify right side
    486,620.51x = 182,448,420,414.14
  5. Step 5: Solve for x
    x = 182,448,420,414.14/486,620.51
  6. Step 6: Final answer
    x = 374,929.57

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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.