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Finding the Fourth Proportional to 486,608.50, 671,512.44 and 271,751.68

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Solution

The fourth proportional to 486,608.50, 671,512.44 and 271,751.68 is: 375,013.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,608.50 : 671,512.44 = 271,751.68 : x
  2. Step 2: Convert to fraction form
    486,608.50/671,512.44 = 271,751.68/x
  3. Step 3: Cross multiply
    486,608.50x = 671,512.44 × 271,751.68
  4. Step 4: Simplify right side
    486,608.50x = 182,484,633,710.90
  5. Step 5: Solve for x
    x = 182,484,633,710.90/486,608.50
  6. Step 6: Final answer
    x = 375,013.25

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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.