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Finding the Fourth Proportional to 405,231.80, 607,847.70 and 180,699.80

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Solution

The fourth proportional to 405,231.80, 607,847.70 and 180,699.80 is: 271,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,231.80 : 607,847.70 = 180,699.80 : x
  2. Step 2: Convert to fraction form
    405,231.80/607,847.70 = 180,699.80/x
  3. Step 3: Cross multiply
    405,231.80x = 607,847.70 × 180,699.80
  4. Step 4: Simplify right side
    405,231.80x = 109,837,957,820.46
  5. Step 5: Solve for x
    x = 109,837,957,820.46/405,231.80
  6. Step 6: Final answer
    x = 271,049.70

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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.