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Finding the Fourth Proportional to 405,013.80, 607,034.70 and 168,234.60

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Solution

The fourth proportional to 405,013.80, 607,034.70 and 168,234.60 is: 252,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,013.80 : 607,034.70 = 168,234.60 : x
  2. Step 2: Convert to fraction form
    405,013.80/607,034.70 = 168,234.60/x
  3. Step 3: Cross multiply
    405,013.80x = 607,034.70 × 168,234.60
  4. Step 4: Simplify right side
    405,013.80x = 102,124,239,940.62
  5. Step 5: Solve for x
    x = 102,124,239,940.62/405,013.80
  6. Step 6: Final answer
    x = 252,150.03

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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.