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Finding the Fourth Proportional to 324,435.43, 486,699.45 and 99,814.60

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Solution

The fourth proportional to 324,435.43, 486,699.45 and 99,814.60 is: 149,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,435.43 : 486,699.45 = 99,814.60 : x
  2. Step 2: Convert to fraction form
    324,435.43/486,699.45 = 99,814.60/x
  3. Step 3: Cross multiply
    324,435.43x = 486,699.45 × 99,814.60
  4. Step 4: Simplify right side
    324,435.43x = 48,579,710,921.97
  5. Step 5: Solve for x
    x = 48,579,710,921.97/324,435.43
  6. Step 6: Final answer
    x = 149,736.15

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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.