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Finding the Fourth Proportional to 449,557.57, 674,668.17 and 212,899.87

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Solution

The fourth proportional to 449,557.57, 674,668.17 and 212,899.87 is: 319,506.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,557.57 : 674,668.17 = 212,899.87 : x
  2. Step 2: Convert to fraction form
    449,557.57/674,668.17 = 212,899.87/x
  3. Step 3: Cross multiply
    449,557.57x = 674,668.17 × 212,899.87
  4. Step 4: Simplify right side
    449,557.57x = 143,636,765,686.14
  5. Step 5: Solve for x
    x = 143,636,765,686.14/449,557.57
  6. Step 6: Final answer
    x = 319,506.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.