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Finding the Fourth Proportional to 488,970.61, 674,820.89 and 271,249.43

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Solution

The fourth proportional to 488,970.61, 674,820.89 and 271,249.43 is: 374,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,970.61 : 674,820.89 = 271,249.43 : x
  2. Step 2: Convert to fraction form
    488,970.61/674,820.89 = 271,249.43/x
  3. Step 3: Cross multiply
    488,970.61x = 674,820.89 × 271,249.43
  4. Step 4: Simplify right side
    488,970.61x = 183,044,781,764.59
  5. Step 5: Solve for x
    x = 183,044,781,764.59/488,970.61
  6. Step 6: Final answer
    x = 374,347.21

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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.