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Finding the Fourth Proportional to 486,257.89, 671,069.69 and 271,439.89

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Solution

The fourth proportional to 486,257.89, 671,069.69 and 271,439.89 is: 374,605.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,257.89 : 671,069.69 = 271,439.89 : x
  2. Step 2: Convert to fraction form
    486,257.89/671,069.69 = 271,439.89/x
  3. Step 3: Cross multiply
    486,257.89x = 671,069.69 × 271,439.89
  4. Step 4: Simplify right side
    486,257.89x = 182,155,080,159.19
  5. Step 5: Solve for x
    x = 182,155,080,159.19/486,257.89
  6. Step 6: Final answer
    x = 374,605.92

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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.