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Finding the Fourth Proportional to 328,512.60, 493,805.70 and 303,629.40

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Solution

The fourth proportional to 328,512.60, 493,805.70 and 303,629.40 is: 456,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,512.60 : 493,805.70 = 303,629.40 : x
  2. Step 2: Convert to fraction form
    328,512.60/493,805.70 = 303,629.40/x
  3. Step 3: Cross multiply
    328,512.60x = 493,805.70 × 303,629.40
  4. Step 4: Simplify right side
    328,512.60x = 149,933,928,407.58
  5. Step 5: Solve for x
    x = 149,933,928,407.58/328,512.60
  6. Step 6: Final answer
    x = 456,402.37

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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.