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Finding the Fourth Proportional to 449,668.14, 620,534.57 and 245,714.70

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Solution

The fourth proportional to 449,668.14, 620,534.57 and 245,714.70 is: 339,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,668.14 : 620,534.57 = 245,714.70 : x
  2. Step 2: Convert to fraction form
    449,668.14/620,534.57 = 245,714.70/x
  3. Step 3: Cross multiply
    449,668.14x = 620,534.57 × 245,714.70
  4. Step 4: Simplify right side
    449,668.14x = 152,474,464,478.61
  5. Step 5: Solve for x
    x = 152,474,464,478.61/449,668.14
  6. Step 6: Final answer
    x = 339,082.21

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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.