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Finding the Fourth Proportional to 489,231.19, 675,144.52 and 271,443.86

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Solution

The fourth proportional to 489,231.19, 675,144.52 and 271,443.86 is: 374,595.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,231.19 : 675,144.52 = 271,443.86 : x
  2. Step 2: Convert to fraction form
    489,231.19/675,144.52 = 271,443.86/x
  3. Step 3: Cross multiply
    489,231.19x = 675,144.52 × 271,443.86
  4. Step 4: Simplify right side
    489,231.19x = 183,263,833,044.11
  5. Step 5: Solve for x
    x = 183,263,833,044.11/489,231.19
  6. Step 6: Final answer
    x = 374,595.56

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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.