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Finding the Fourth Proportional to 388,939.60, 582,534.60 and 231,475.60

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Solution

The fourth proportional to 388,939.60, 582,534.60 and 231,475.60 is: 346,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,939.60 : 582,534.60 = 231,475.60 : x
  2. Step 2: Convert to fraction form
    388,939.60/582,534.60 = 231,475.60/x
  3. Step 3: Cross multiply
    388,939.60x = 582,534.60 × 231,475.60
  4. Step 4: Simplify right side
    388,939.60x = 134,842,546,055.76
  5. Step 5: Solve for x
    x = 134,842,546,055.76/388,939.60
  6. Step 6: Final answer
    x = 346,692.77

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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.