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Finding the Fourth Proportional to 486,009.75, 670,712.90 and 271,168.59

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Solution

The fourth proportional to 486,009.75, 670,712.90 and 271,168.59 is: 374,223.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,009.75 : 670,712.90 = 271,168.59 : x
  2. Step 2: Convert to fraction form
    486,009.75/670,712.90 = 271,168.59/x
  3. Step 3: Cross multiply
    486,009.75x = 670,712.90 × 271,168.59
  4. Step 4: Simplify right side
    486,009.75x = 181,876,270,031.97
  5. Step 5: Solve for x
    x = 181,876,270,031.97/486,009.75
  6. Step 6: Final answer
    x = 374,223.50

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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.