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Finding the Fourth Proportional to 347,763.96, 521,673.78 and 111,140.28

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Solution

The fourth proportional to 347,763.96, 521,673.78 and 111,140.28 is: 166,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,763.96 : 521,673.78 = 111,140.28 : x
  2. Step 2: Convert to fraction form
    347,763.96/521,673.78 = 111,140.28/x
  3. Step 3: Cross multiply
    347,763.96x = 521,673.78 × 111,140.28
  4. Step 4: Simplify right side
    347,763.96x = 57,978,969,977.86
  5. Step 5: Solve for x
    x = 57,978,969,977.86/347,763.96
  6. Step 6: Final answer
    x = 166,719.32

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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.