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Finding the Fourth Proportional to 274,423.60, 378,576.48 and 177,658.57

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Solution

The fourth proportional to 274,423.60, 378,576.48 and 177,658.57 is: 245,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,423.60 : 378,576.48 = 177,658.57 : x
  2. Step 2: Convert to fraction form
    274,423.60/378,576.48 = 177,658.57/x
  3. Step 3: Cross multiply
    274,423.60x = 378,576.48 × 177,658.57
  4. Step 4: Simplify right side
    274,423.60x = 67,257,356,072.43
  5. Step 5: Solve for x
    x = 67,257,356,072.43/274,423.60
  6. Step 6: Final answer
    x = 245,085.90

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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.