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Finding the Fourth Proportional to 500,716.30, 751,063.80 and 121,638.82

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Solution

The fourth proportional to 500,716.30, 751,063.80 and 121,638.82 is: 182,455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,716.30 : 751,063.80 = 121,638.82 : x
  2. Step 2: Convert to fraction form
    500,716.30/751,063.80 = 121,638.82/x
  3. Step 3: Cross multiply
    500,716.30x = 751,063.80 × 121,638.82
  4. Step 4: Simplify right side
    500,716.30x = 91,358,514,376.72
  5. Step 5: Solve for x
    x = 91,358,514,376.72/500,716.30
  6. Step 6: Final answer
    x = 182,455.64

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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.