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Finding the Fourth Proportional to 486,850.71, 671,885.51 and 271,991.94

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Solution

The fourth proportional to 486,850.71, 671,885.51 and 271,991.94 is: 375,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,850.71 : 671,885.51 = 271,991.94 : x
  2. Step 2: Convert to fraction form
    486,850.71/671,885.51 = 271,991.94/x
  3. Step 3: Cross multiply
    486,850.71x = 671,885.51 × 271,991.94
  4. Step 4: Simplify right side
    486,850.71x = 182,747,443,322.79
  5. Step 5: Solve for x
    x = 182,747,443,322.79/486,850.71
  6. Step 6: Final answer
    x = 375,366.49

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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.