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Finding the Fourth Proportional to 659,430.90, 989,163.09 and 179,662.56

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Solution

The fourth proportional to 659,430.90, 989,163.09 and 179,662.56 is: 269,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,430.90 : 989,163.09 = 179,662.56 : x
  2. Step 2: Convert to fraction form
    659,430.90/989,163.09 = 179,662.56/x
  3. Step 3: Cross multiply
    659,430.90x = 989,163.09 × 179,662.56
  4. Step 4: Simplify right side
    659,430.90x = 177,715,573,006.91
  5. Step 5: Solve for x
    x = 177,715,573,006.91/659,430.90
  6. Step 6: Final answer
    x = 269,498.40

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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.