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Finding the Fourth Proportional to 258,441.92, 387,662.88 and 118,102.13

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Solution

The fourth proportional to 258,441.92, 387,662.88 and 118,102.13 is: 177,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,441.92 : 387,662.88 = 118,102.13 : x
  2. Step 2: Convert to fraction form
    258,441.92/387,662.88 = 118,102.13/x
  3. Step 3: Cross multiply
    258,441.92x = 387,662.88 × 118,102.13
  4. Step 4: Simplify right side
    258,441.92x = 45,783,809,911.62
  5. Step 5: Solve for x
    x = 45,783,809,911.62/258,441.92
  6. Step 6: Final answer
    x = 177,153.19

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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.