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Finding the Fourth Proportional to 478,209.81, 659,919.52 and 263,351.64

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Solution

The fourth proportional to 478,209.81, 659,919.52 and 263,351.64 is: 363,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,209.81 : 659,919.52 = 263,351.64 : x
  2. Step 2: Convert to fraction form
    478,209.81/659,919.52 = 263,351.64/x
  3. Step 3: Cross multiply
    478,209.81x = 659,919.52 × 263,351.64
  4. Step 4: Simplify right side
    478,209.81x = 173,790,887,860.01
  5. Step 5: Solve for x
    x = 173,790,887,860.01/478,209.81
  6. Step 6: Final answer
    x = 363,419.75

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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.