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Finding the Fourth Proportional to 449,278.50, 620,029.56 and 245,348.38

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Solution

The fourth proportional to 449,278.50, 620,029.56 and 245,348.38 is: 338,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,278.50 : 620,029.56 = 245,348.38 : x
  2. Step 2: Convert to fraction form
    449,278.50/620,029.56 = 245,348.38/x
  3. Step 3: Cross multiply
    449,278.50x = 620,029.56 × 245,348.38
  4. Step 4: Simplify right side
    449,278.50x = 152,123,248,098.11
  5. Step 5: Solve for x
    x = 152,123,248,098.11/449,278.50
  6. Step 6: Final answer
    x = 338,594.54

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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.