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Finding the Fourth Proportional to 275,325.55, 379,955.10 and 154,475.57

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Solution

The fourth proportional to 275,325.55, 379,955.10 and 154,475.57 is: 213,179.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,325.55 : 379,955.10 = 154,475.57 : x
  2. Step 2: Convert to fraction form
    275,325.55/379,955.10 = 154,475.57/x
  3. Step 3: Cross multiply
    275,325.55x = 379,955.10 × 154,475.57
  4. Step 4: Simplify right side
    275,325.55x = 58,693,782,176.08
  5. Step 5: Solve for x
    x = 58,693,782,176.08/275,325.55
  6. Step 6: Final answer
    x = 213,179.57

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1.5x scale

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.