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Finding the Fourth Proportional to 388,347.60, 582,604.56 and 219,947.52

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Solution

The fourth proportional to 388,347.60, 582,604.56 and 219,947.52 is: 329,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,347.60 : 582,604.56 = 219,947.52 : x
  2. Step 2: Convert to fraction form
    388,347.60/582,604.56 = 219,947.52/x
  3. Step 3: Cross multiply
    388,347.60x = 582,604.56 × 219,947.52
  4. Step 4: Simplify right side
    388,347.60x = 128,142,428,112.69
  5. Step 5: Solve for x
    x = 128,142,428,112.69/388,347.60
  6. Step 6: Final answer
    x = 329,968.38

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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.