Home / 351,423.20-485,043.76-274,790.72

Finding the Fourth Proportional to 351,423.20, 485,043.76 and 274,790.72

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Solution

The fourth proportional to 351,423.20, 485,043.76 and 274,790.72 is: 379,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,423.20 : 485,043.76 = 274,790.72 : x
  2. Step 2: Convert to fraction form
    351,423.20/485,043.76 = 274,790.72/x
  3. Step 3: Cross multiply
    351,423.20x = 485,043.76 × 274,790.72
  4. Step 4: Simplify right side
    351,423.20x = 133,285,524,041.91
  5. Step 5: Solve for x
    x = 133,285,524,041.91/351,423.20
  6. Step 6: Final answer
    x = 379,273.55

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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.