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Finding the Fourth Proportional to 274,544.35, 378,916.55 and 188,432.60

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Solution

The fourth proportional to 274,544.35, 378,916.55 and 188,432.60 is: 260,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,544.35 : 378,916.55 = 188,432.60 : x
  2. Step 2: Convert to fraction form
    274,544.35/378,916.55 = 188,432.60/x
  3. Step 3: Cross multiply
    274,544.35x = 378,916.55 × 188,432.60
  4. Step 4: Simplify right side
    274,544.35x = 71,400,229,276.03
  5. Step 5: Solve for x
    x = 71,400,229,276.03/274,544.35
  6. Step 6: Final answer
    x = 260,068.10

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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.