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Finding the Fourth Proportional to 660,450.76, 990,685.25 and 187,135.66

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Solution

The fourth proportional to 660,450.76, 990,685.25 and 187,135.66 is: 280,706.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,450.76 : 990,685.25 = 187,135.66 : x
  2. Step 2: Convert to fraction form
    660,450.76/990,685.25 = 187,135.66/x
  3. Step 3: Cross multiply
    660,450.76x = 990,685.25 × 187,135.66
  4. Step 4: Simplify right side
    660,450.76x = 185,392,534,698.62
  5. Step 5: Solve for x
    x = 185,392,534,698.62/660,450.76
  6. Step 6: Final answer
    x = 280,706.07

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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.