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Finding the Fourth Proportional to 659,359.51, 989,188.44 and 210,105.97

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Solution

The fourth proportional to 659,359.51, 989,188.44 and 210,105.97 is: 315,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,359.51 : 989,188.44 = 210,105.97 : x
  2. Step 2: Convert to fraction form
    659,359.51/989,188.44 = 210,105.97/x
  3. Step 3: Cross multiply
    659,359.51x = 989,188.44 × 210,105.97
  4. Step 4: Simplify right side
    659,359.51x = 207,834,396,698.99
  5. Step 5: Solve for x
    x = 207,834,396,698.99/659,359.51
  6. Step 6: Final answer
    x = 315,206.49

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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.