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Finding the Fourth Proportional to 361,839.78, 499,012.11 and 225,886.34

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Solution

The fourth proportional to 361,839.78, 499,012.11 and 225,886.34 is: 311,519.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,839.78 : 499,012.11 = 225,886.34 : x
  2. Step 2: Convert to fraction form
    361,839.78/499,012.11 = 225,886.34/x
  3. Step 3: Cross multiply
    361,839.78x = 499,012.11 × 225,886.34
  4. Step 4: Simplify right side
    361,839.78x = 112,720,020,391.11
  5. Step 5: Solve for x
    x = 112,720,020,391.11/361,839.78
  6. Step 6: Final answer
    x = 311,519.15

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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.