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Finding the Fourth Proportional to 418,056.16, 627,096.16 and 102,512.80

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Solution

The fourth proportional to 418,056.16, 627,096.16 and 102,512.80 is: 153,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,056.16 : 627,096.16 = 102,512.80 : x
  2. Step 2: Convert to fraction form
    418,056.16/627,096.16 = 102,512.80/x
  3. Step 3: Cross multiply
    418,056.16x = 627,096.16 × 102,512.80
  4. Step 4: Simplify right side
    418,056.16x = 64,285,383,230.85
  5. Step 5: Solve for x
    x = 64,285,383,230.85/418,056.16
  6. Step 6: Final answer
    x = 153,772.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.