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Finding the Fourth Proportional to 489,635.76, 675,702.36 and 271,848

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Solution

The fourth proportional to 489,635.76, 675,702.36 and 271,848 is: 375,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,635.76 : 675,702.36 = 271,848 : x
  2. Step 2: Convert to fraction form
    489,635.76/675,702.36 = 271,848/x
  3. Step 3: Cross multiply
    489,635.76x = 675,702.36 × 271,848
  4. Step 4: Simplify right side
    489,635.76x = 183,688,335,161.28
  5. Step 5: Solve for x
    x = 183,688,335,161.28/489,635.76
  6. Step 6: Final answer
    x = 375,153.02

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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.