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Finding the Fourth Proportional to 610,419.75, 842,379.26 and 342,147.75

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Solution

The fourth proportional to 610,419.75, 842,379.26 and 342,147.75 is: 472,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,419.75 : 842,379.26 = 342,147.75 : x
  2. Step 2: Convert to fraction form
    610,419.75/842,379.26 = 342,147.75/x
  3. Step 3: Cross multiply
    610,419.75x = 842,379.26 × 342,147.75
  4. Step 4: Simplify right side
    610,419.75x = 288,218,166,744.93
  5. Step 5: Solve for x
    x = 288,218,166,744.93/610,419.75
  6. Step 6: Final answer
    x = 472,163.90

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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.