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Finding the Fourth Proportional to 321,458.88, 482,191.98 and 121,725.03

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Solution

The fourth proportional to 321,458.88, 482,191.98 and 121,725.03 is: 182,588.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,458.88 : 482,191.98 = 121,725.03 : x
  2. Step 2: Convert to fraction form
    321,458.88/482,191.98 = 121,725.03/x
  3. Step 3: Cross multiply
    321,458.88x = 482,191.98 × 121,725.03
  4. Step 4: Simplify right side
    321,458.88x = 58,694,833,231.26
  5. Step 5: Solve for x
    x = 58,694,833,231.26/321,458.88
  6. Step 6: Final answer
    x = 182,588.93

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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.