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Finding the Fourth Proportional to 486,211.85, 671,018.99 and 271,371.90

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Solution

The fourth proportional to 486,211.85, 671,018.99 and 271,371.90 is: 374,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,211.85 : 671,018.99 = 271,371.90 : x
  2. Step 2: Convert to fraction form
    486,211.85/671,018.99 = 271,371.90/x
  3. Step 3: Cross multiply
    486,211.85x = 671,018.99 × 271,371.90
  4. Step 4: Simplify right side
    486,211.85x = 182,095,699,411.84
  5. Step 5: Solve for x
    x = 182,095,699,411.84/486,211.85
  6. Step 6: Final answer
    x = 374,519.26

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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.