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Finding the Fourth Proportional to 388,797.36, 533,041.14 and 381,711.48

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Solution

The fourth proportional to 388,797.36, 533,041.14 and 381,711.48 is: 523,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,797.36 : 533,041.14 = 381,711.48 : x
  2. Step 2: Convert to fraction form
    388,797.36/533,041.14 = 381,711.48/x
  3. Step 3: Cross multiply
    388,797.36x = 533,041.14 × 381,711.48
  4. Step 4: Simplify right side
    388,797.36x = 203,467,922,450.29
  5. Step 5: Solve for x
    x = 203,467,922,450.29/388,797.36
  6. Step 6: Final answer
    x = 523,326.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.