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Finding the Fourth Proportional to 354,507.20, 531,760.80 and 323,403.20

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Solution

The fourth proportional to 354,507.20, 531,760.80 and 323,403.20 is: 485,104.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,507.20 : 531,760.80 = 323,403.20 : x
  2. Step 2: Convert to fraction form
    354,507.20/531,760.80 = 323,403.20/x
  3. Step 3: Cross multiply
    354,507.20x = 531,760.80 × 323,403.20
  4. Step 4: Simplify right side
    354,507.20x = 171,973,144,354.56
  5. Step 5: Solve for x
    x = 171,973,144,354.56/354,507.20
  6. Step 6: Final answer
    x = 485,104.80

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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.