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Finding the Fourth Proportional to 613,287.66, 919,866.78 and 164,053.88

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Solution

The fourth proportional to 613,287.66, 919,866.78 and 164,053.88 is: 246,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,287.66 : 919,866.78 = 164,053.88 : x
  2. Step 2: Convert to fraction form
    613,287.66/919,866.78 = 164,053.88/x
  3. Step 3: Cross multiply
    613,287.66x = 919,866.78 × 164,053.88
  4. Step 4: Simplify right side
    613,287.66x = 150,907,709,742.77
  5. Step 5: Solve for x
    x = 150,907,709,742.77/613,287.66
  6. Step 6: Final answer
    x = 246,063.50

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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.