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Finding the Fourth Proportional to 321,221.52, 481,645.47 and 121,557.30

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Solution

The fourth proportional to 321,221.52, 481,645.47 and 121,557.30 is: 182,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,221.52 : 481,645.47 = 121,557.30 : x
  2. Step 2: Convert to fraction form
    321,221.52/481,645.47 = 121,557.30/x
  3. Step 3: Cross multiply
    321,221.52x = 481,645.47 × 121,557.30
  4. Step 4: Simplify right side
    321,221.52x = 58,547,522,890.43
  5. Step 5: Solve for x
    x = 58,547,522,890.43/321,221.52
  6. Step 6: Final answer
    x = 182,265.26

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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.