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Finding the Fourth Proportional to 486,708.81, 671,591.43 and 271,821.48

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Solution

The fourth proportional to 486,708.81, 671,591.43 and 271,821.48 is: 375,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,708.81 : 671,591.43 = 271,821.48 : x
  2. Step 2: Convert to fraction form
    486,708.81/671,591.43 = 271,821.48/x
  3. Step 3: Cross multiply
    486,708.81x = 671,591.43 × 271,821.48
  4. Step 4: Simplify right side
    486,708.81x = 182,552,976,457.92
  5. Step 5: Solve for x
    x = 182,552,976,457.92/486,708.81
  6. Step 6: Final answer
    x = 375,076.38

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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.