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Finding the Fourth Proportional to 486,851.71, 671,886.89 and 271,992.94

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Solution

The fourth proportional to 486,851.71, 671,886.89 and 271,992.94 is: 375,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,851.71 : 671,886.89 = 271,992.94 : x
  2. Step 2: Convert to fraction form
    486,851.71/671,886.89 = 271,992.94/x
  3. Step 3: Cross multiply
    486,851.71x = 671,886.89 × 271,992.94
  4. Step 4: Simplify right side
    486,851.71x = 182,748,490,558.56
  5. Step 5: Solve for x
    x = 182,748,490,558.56/486,851.71
  6. Step 6: Final answer
    x = 375,367.87

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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.