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Finding the Fourth Proportional to 659,429.90, 989,161.59 and 179,661.56

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Solution

The fourth proportional to 659,429.90, 989,161.59 and 179,661.56 is: 269,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,429.90 : 989,161.59 = 179,661.56 : x
  2. Step 2: Convert to fraction form
    659,429.90/989,161.59 = 179,661.56/x
  3. Step 3: Cross multiply
    659,429.90x = 989,161.59 × 179,661.56
  4. Step 4: Simplify right side
    659,429.90x = 177,714,309,405.67
  5. Step 5: Solve for x
    x = 177,714,309,405.67/659,429.90
  6. Step 6: Final answer
    x = 269,496.89

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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.