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Finding the Fourth Proportional to 321,503.72, 482,157.10 and 222,301.40

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Solution

The fourth proportional to 321,503.72, 482,157.10 and 222,301.40 is: 333,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,503.72 : 482,157.10 = 222,301.40 : x
  2. Step 2: Convert to fraction form
    321,503.72/482,157.10 = 222,301.40/x
  3. Step 3: Cross multiply
    321,503.72x = 482,157.10 × 222,301.40
  4. Step 4: Simplify right side
    321,503.72x = 107,184,198,349.94
  5. Step 5: Solve for x
    x = 107,184,198,349.94/321,503.72
  6. Step 6: Final answer
    x = 333,384.01

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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.