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Finding the Fourth Proportional to 405,065.25, 607,183.16 and 168,545.25

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Solution

The fourth proportional to 405,065.25, 607,183.16 and 168,545.25 is: 252,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,065.25 : 607,183.16 = 168,545.25 : x
  2. Step 2: Convert to fraction form
    405,065.25/607,183.16 = 168,545.25/x
  3. Step 3: Cross multiply
    405,065.25x = 607,183.16 × 168,545.25
  4. Step 4: Simplify right side
    405,065.25x = 102,337,836,655.26
  5. Step 5: Solve for x
    x = 102,337,836,655.26/405,065.25
  6. Step 6: Final answer
    x = 252,645.31

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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.