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Finding the Fourth Proportional to 324,200.40, 486,089.40 and 291,022.80

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Solution

The fourth proportional to 324,200.40, 486,089.40 and 291,022.80 is: 436,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,200.40 : 486,089.40 = 291,022.80 : x
  2. Step 2: Convert to fraction form
    324,200.40/486,089.40 = 291,022.80/x
  3. Step 3: Cross multiply
    324,200.40x = 486,089.40 × 291,022.80
  4. Step 4: Simplify right side
    324,200.40x = 141,463,098,238.32
  5. Step 5: Solve for x
    x = 141,463,098,238.32/324,200.40
  6. Step 6: Final answer
    x = 436,344.61

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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.