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Finding the Fourth Proportional to 479,289.90, 661,408.92 and 264,429.87

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Solution

The fourth proportional to 479,289.90, 661,408.92 and 264,429.87 is: 364,907.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,289.90 : 661,408.92 = 264,429.87 : x
  2. Step 2: Convert to fraction form
    479,289.90/661,408.92 = 264,429.87/x
  3. Step 3: Cross multiply
    479,289.90x = 661,408.92 × 264,429.87
  4. Step 4: Simplify right side
    479,289.90x = 174,896,274,732.44
  5. Step 5: Solve for x
    x = 174,896,274,732.44/479,289.90
  6. Step 6: Final answer
    x = 364,907.07

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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.