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Finding the Fourth Proportional to 479,317.88, 661,478.68 and 264,471.86

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Solution

The fourth proportional to 479,317.88, 661,478.68 and 264,471.86 is: 364,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,317.88 : 661,478.68 = 264,471.86 : x
  2. Step 2: Convert to fraction form
    479,317.88/661,478.68 = 264,471.86/x
  3. Step 3: Cross multiply
    479,317.88x = 661,478.68 × 264,471.86
  4. Step 4: Simplify right side
    479,317.88x = 174,942,496,849.95
  5. Step 5: Solve for x
    x = 174,942,496,849.95/479,317.88
  6. Step 6: Final answer
    x = 364,982.21

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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.