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Finding the Fourth Proportional to 486,618.51, 671,436.14 and 271,725.51

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Solution

The fourth proportional to 486,618.51, 671,436.14 and 271,725.51 is: 374,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,618.51 : 671,436.14 = 271,725.51 : x
  2. Step 2: Convert to fraction form
    486,618.51/671,436.14 = 271,725.51/x
  3. Step 3: Cross multiply
    486,618.51x = 671,436.14 × 271,725.51
  4. Step 4: Simplify right side
    486,618.51x = 182,446,324,216.75
  5. Step 5: Solve for x
    x = 182,446,324,216.75/486,618.51
  6. Step 6: Final answer
    x = 374,926.81

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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.