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Finding the Fourth Proportional to 497,906.88, 687,103.20 and 271,538.88

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Solution

The fourth proportional to 497,906.88, 687,103.20 and 271,538.88 is: 374,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,906.88 : 687,103.20 = 271,538.88 : x
  2. Step 2: Convert to fraction form
    497,906.88/687,103.20 = 271,538.88/x
  3. Step 3: Cross multiply
    497,906.88x = 687,103.20 × 271,538.88
  4. Step 4: Simplify right side
    497,906.88x = 186,575,233,372.42
  5. Step 5: Solve for x
    x = 186,575,233,372.42/497,906.88
  6. Step 6: Final answer
    x = 374,719.13

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1.5x scale

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.