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Finding the Fourth Proportional to 449,313.66, 673,637.58 and 212,379.48

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Solution

The fourth proportional to 449,313.66, 673,637.58 and 212,379.48 is: 318,411.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,313.66 : 673,637.58 = 212,379.48 : x
  2. Step 2: Convert to fraction form
    449,313.66/673,637.58 = 212,379.48/x
  3. Step 3: Cross multiply
    449,313.66x = 673,637.58 × 212,379.48
  4. Step 4: Simplify right side
    449,313.66x = 143,066,798,948.86
  5. Step 5: Solve for x
    x = 143,066,798,948.86/449,313.66
  6. Step 6: Final answer
    x = 318,411.86

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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.