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Finding the Fourth Proportional to 489,734.61, 675,800.79 and 271,932.09

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Solution

The fourth proportional to 489,734.61, 675,800.79 and 271,932.09 is: 375,247.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,734.61 : 675,800.79 = 271,932.09 : x
  2. Step 2: Convert to fraction form
    489,734.61/675,800.79 = 271,932.09/x
  3. Step 3: Cross multiply
    489,734.61x = 675,800.79 × 271,932.09
  4. Step 4: Simplify right side
    489,734.61x = 183,771,921,248.35
  5. Step 5: Solve for x
    x = 183,771,921,248.35/489,734.61
  6. Step 6: Final answer
    x = 375,247.98

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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.