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Finding the Fourth Proportional to 388,668.20, 583,080.66 and 164,028.87

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Solution

The fourth proportional to 388,668.20, 583,080.66 and 164,028.87 is: 246,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,668.20 : 583,080.66 = 164,028.87 : x
  2. Step 2: Convert to fraction form
    388,668.20/583,080.66 = 164,028.87/x
  3. Step 3: Cross multiply
    388,668.20x = 583,080.66 × 164,028.87
  4. Step 4: Simplify right side
    388,668.20x = 95,642,061,778.65
  5. Step 5: Solve for x
    x = 95,642,061,778.65/388,668.20
  6. Step 6: Final answer
    x = 246,076.38

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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.