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Finding the Fourth Proportional to 395,122.64, 545,263.64 and 225,359.60

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Solution

The fourth proportional to 395,122.64, 545,263.64 and 225,359.60 is: 310,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,122.64 : 545,263.64 = 225,359.60 : x
  2. Step 2: Convert to fraction form
    395,122.64/545,263.64 = 225,359.60/x
  3. Step 3: Cross multiply
    395,122.64x = 545,263.64 × 225,359.60
  4. Step 4: Simplify right side
    395,122.64x = 122,880,395,804.94
  5. Step 5: Solve for x
    x = 122,880,395,804.94/395,122.64
  6. Step 6: Final answer
    x = 310,993.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.