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Finding the Fourth Proportional to 486,536.70, 671,420.40 and 271,676.64

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Solution

The fourth proportional to 486,536.70, 671,420.40 and 271,676.64 is: 374,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,536.70 : 671,420.40 = 271,676.64 : x
  2. Step 2: Convert to fraction form
    486,536.70/671,420.40 = 271,676.64/x
  3. Step 3: Cross multiply
    486,536.70x = 671,420.40 × 271,676.64
  4. Step 4: Simplify right side
    486,536.70x = 182,409,238,299.46
  5. Step 5: Solve for x
    x = 182,409,238,299.46/486,536.70
  6. Step 6: Final answer
    x = 374,913.63

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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.