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Finding the Fourth Proportional to 321,503.61, 482,156.90 and 222,301.29

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Solution

The fourth proportional to 321,503.61, 482,156.90 and 222,301.29 is: 333,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,503.61 : 482,156.90 = 222,301.29 : x
  2. Step 2: Convert to fraction form
    321,503.61/482,156.90 = 222,301.29/x
  3. Step 3: Cross multiply
    321,503.61x = 482,156.90 × 222,301.29
  4. Step 4: Simplify right side
    321,503.61x = 107,184,100,852.40
  5. Step 5: Solve for x
    x = 107,184,100,852.40/321,503.61
  6. Step 6: Final answer
    x = 333,383.82

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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.