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Finding the Fourth Proportional to 347,400.40, 521,129.40 and 110,736.40

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Solution

The fourth proportional to 347,400.40, 521,129.40 and 110,736.40 is: 166,113.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,400.40 : 521,129.40 = 110,736.40 : x
  2. Step 2: Convert to fraction form
    347,400.40/521,129.40 = 110,736.40/x
  3. Step 3: Cross multiply
    347,400.40x = 521,129.40 × 110,736.40
  4. Step 4: Simplify right side
    347,400.40x = 57,707,993,690.16
  5. Step 5: Solve for x
    x = 57,707,993,690.16/347,400.40
  6. Step 6: Final answer
    x = 166,113.78

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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.