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Finding the Fourth Proportional to 305,247.35, 421,242.48 and 169,293.86

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Solution

The fourth proportional to 305,247.35, 421,242.48 and 169,293.86 is: 233,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,247.35 : 421,242.48 = 169,293.86 : x
  2. Step 2: Convert to fraction form
    305,247.35/421,242.48 = 169,293.86/x
  3. Step 3: Cross multiply
    305,247.35x = 421,242.48 × 169,293.86
  4. Step 4: Simplify right side
    305,247.35x = 71,313,765,435.17
  5. Step 5: Solve for x
    x = 71,313,765,435.17/305,247.35
  6. Step 6: Final answer
    x = 233,626.16

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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.