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Finding the Fourth Proportional to 486,474.51, 671,327.75 and 271,617.56

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Solution

The fourth proportional to 486,474.51, 671,327.75 and 271,617.56 is: 374,828.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,474.51 : 671,327.75 = 271,617.56 : x
  2. Step 2: Convert to fraction form
    486,474.51/671,327.75 = 271,617.56/x
  3. Step 3: Cross multiply
    486,474.51x = 671,327.75 × 271,617.56
  4. Step 4: Simplify right side
    486,474.51x = 182,344,402,737.70
  5. Step 5: Solve for x
    x = 182,344,402,737.70/486,474.51
  6. Step 6: Final answer
    x = 374,828.28

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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.