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Finding the Fourth Proportional to 478,209.78, 659,933.82 and 263,350.71

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Solution

The fourth proportional to 478,209.78, 659,933.82 and 263,350.71 is: 363,426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,209.78 : 659,933.82 = 263,350.71 : x
  2. Step 2: Convert to fraction form
    478,209.78/659,933.82 = 263,350.71/x
  3. Step 3: Cross multiply
    478,209.78x = 659,933.82 × 263,350.71
  4. Step 4: Simplify right side
    478,209.78x = 173,794,040,050.01
  5. Step 5: Solve for x
    x = 173,794,040,050.01/478,209.78
  6. Step 6: Final answer
    x = 363,426.36

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1.5x scale

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.