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Finding the Fourth Proportional to 445,051.09, 666,846.79 and 188,678.82

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Solution

The fourth proportional to 445,051.09, 666,846.79 and 188,678.82 is: 282,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,051.09 : 666,846.79 = 188,678.82 : x
  2. Step 2: Convert to fraction form
    445,051.09/666,846.79 = 188,678.82/x
  3. Step 3: Cross multiply
    445,051.09x = 666,846.79 × 188,678.82
  4. Step 4: Simplify right side
    445,051.09x = 125,819,865,457.99
  5. Step 5: Solve for x
    x = 125,819,865,457.99/445,051.09
  6. Step 6: Final answer
    x = 282,708.81

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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.