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Finding the Fourth Proportional to 388,053.60, 582,744.60 and 210,906.60

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Solution

The fourth proportional to 388,053.60, 582,744.60 and 210,906.60 is: 316,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,053.60 : 582,744.60 = 210,906.60 : x
  2. Step 2: Convert to fraction form
    388,053.60/582,744.60 = 210,906.60/x
  3. Step 3: Cross multiply
    388,053.60x = 582,744.60 × 210,906.60
  4. Step 4: Simplify right side
    388,053.60x = 122,904,682,254.36
  5. Step 5: Solve for x
    x = 122,904,682,254.36/388,053.60
  6. Step 6: Final answer
    x = 316,720.89

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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.