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Finding the Fourth Proportional to 388,901.40, 582,185.70 and 231,048.60

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Solution

The fourth proportional to 388,901.40, 582,185.70 and 231,048.60 is: 345,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,901.40 : 582,185.70 = 231,048.60 : x
  2. Step 2: Convert to fraction form
    388,901.40/582,185.70 = 231,048.60/x
  3. Step 3: Cross multiply
    388,901.40x = 582,185.70 × 231,048.60
  4. Step 4: Simplify right side
    388,901.40x = 134,513,190,925.02
  5. Step 5: Solve for x
    x = 134,513,190,925.02/388,901.40
  6. Step 6: Final answer
    x = 345,879.93

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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.