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Finding the Fourth Proportional to 388,539.28, 582,655.56 and 188,800.48

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Solution

The fourth proportional to 388,539.28, 582,655.56 and 188,800.48 is: 283,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,539.28 : 582,655.56 = 188,800.48 : x
  2. Step 2: Convert to fraction form
    388,539.28/582,655.56 = 188,800.48/x
  3. Step 3: Cross multiply
    388,539.28x = 582,655.56 × 188,800.48
  4. Step 4: Simplify right side
    388,539.28x = 110,005,649,402.67
  5. Step 5: Solve for x
    x = 110,005,649,402.67/388,539.28
  6. Step 6: Final answer
    x = 283,126.20

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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.