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Finding the Fourth Proportional to 275,618.60, 380,330.32 and 154,750.40

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Solution

The fourth proportional to 275,618.60, 380,330.32 and 154,750.40 is: 213,542.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,618.60 : 380,330.32 = 154,750.40 : x
  2. Step 2: Convert to fraction form
    275,618.60/380,330.32 = 154,750.40/x
  3. Step 3: Cross multiply
    275,618.60x = 380,330.32 × 154,750.40
  4. Step 4: Simplify right side
    275,618.60x = 58,856,269,152.13
  5. Step 5: Solve for x
    x = 58,856,269,152.13/275,618.60
  6. Step 6: Final answer
    x = 213,542.44

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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.