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Finding the Fourth Proportional to 347,836, 521,728.48 and 111,115.12

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Solution

The fourth proportional to 347,836, 521,728.48 and 111,115.12 is: 166,664.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,836 : 521,728.48 = 111,115.12 : x
  2. Step 2: Convert to fraction form
    347,836/521,728.48 = 111,115.12/x
  3. Step 3: Cross multiply
    347,836x = 521,728.48 × 111,115.12
  4. Step 4: Simplify right side
    347,836x = 57,971,922,662.62
  5. Step 5: Solve for x
    x = 57,971,922,662.62/347,836
  6. Step 6: Final answer
    x = 166,664.53

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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.