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Finding the Fourth Proportional to 305,174.25, 421,145.53 and 169,213.93

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Solution

The fourth proportional to 305,174.25, 421,145.53 and 169,213.93 is: 233,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,174.25 : 421,145.53 = 169,213.93 : x
  2. Step 2: Convert to fraction form
    305,174.25/421,145.53 = 169,213.93/x
  3. Step 3: Cross multiply
    305,174.25x = 421,145.53 × 169,213.93
  4. Step 4: Simplify right side
    305,174.25x = 71,263,688,757.33
  5. Step 5: Solve for x
    x = 71,263,688,757.33/305,174.25
  6. Step 6: Final answer
    x = 233,518.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.