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Finding the Fourth Proportional to 342,539.57, 472,690.08 and 189,563.46

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Solution

The fourth proportional to 342,539.57, 472,690.08 and 189,563.46 is: 261,589.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,539.57 : 472,690.08 = 189,563.46 : x
  2. Step 2: Convert to fraction form
    342,539.57/472,690.08 = 189,563.46/x
  3. Step 3: Cross multiply
    342,539.57x = 472,690.08 × 189,563.46
  4. Step 4: Simplify right side
    342,539.57x = 89,604,765,299.89
  5. Step 5: Solve for x
    x = 89,604,765,299.89/342,539.57
  6. Step 6: Final answer
    x = 261,589.53

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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.