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Finding the Fourth Proportional to 449,595.53, 673,815.10 and 212,415.38

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Solution

The fourth proportional to 449,595.53, 673,815.10 and 212,415.38 is: 318,349.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,595.53 : 673,815.10 = 212,415.38 : x
  2. Step 2: Convert to fraction form
    449,595.53/673,815.10 = 212,415.38/x
  3. Step 3: Cross multiply
    449,595.53x = 673,815.10 × 212,415.38
  4. Step 4: Simplify right side
    449,595.53x = 143,128,686,616.12
  5. Step 5: Solve for x
    x = 143,128,686,616.12/449,595.53
  6. Step 6: Final answer
    x = 318,349.89

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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.