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Finding the Fourth Proportional to 551,648.20, 827,472.30 and 214,704.40

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Solution

The fourth proportional to 551,648.20, 827,472.30 and 214,704.40 is: 322,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,648.20 : 827,472.30 = 214,704.40 : x
  2. Step 2: Convert to fraction form
    551,648.20/827,472.30 = 214,704.40/x
  3. Step 3: Cross multiply
    551,648.20x = 827,472.30 × 214,704.40
  4. Step 4: Simplify right side
    551,648.20x = 177,661,943,688.12
  5. Step 5: Solve for x
    x = 177,661,943,688.12/551,648.20
  6. Step 6: Final answer
    x = 322,056.60

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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.