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Finding the Fourth Proportional to 342,136.87, 472,140.51 and 189,171.03

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Solution

The fourth proportional to 342,136.87, 472,140.51 and 189,171.03 is: 261,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,136.87 : 472,140.51 = 189,171.03 : x
  2. Step 2: Convert to fraction form
    342,136.87/472,140.51 = 189,171.03/x
  3. Step 3: Cross multiply
    342,136.87x = 472,140.51 × 189,171.03
  4. Step 4: Simplify right side
    342,136.87x = 89,315,306,581.43
  5. Step 5: Solve for x
    x = 89,315,306,581.43/342,136.87
  6. Step 6: Final answer
    x = 261,051.39

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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.