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Finding the Fourth Proportional to 388,086.40, 580,963.20 and 230,233.60

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Solution

The fourth proportional to 388,086.40, 580,963.20 and 230,233.60 is: 344,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,086.40 : 580,963.20 = 230,233.60 : x
  2. Step 2: Convert to fraction form
    388,086.40/580,963.20 = 230,233.60/x
  3. Step 3: Cross multiply
    388,086.40x = 580,963.20 × 230,233.60
  4. Step 4: Simplify right side
    388,086.40x = 133,757,249,003.52
  5. Step 5: Solve for x
    x = 133,757,249,003.52/388,086.40
  6. Step 6: Final answer
    x = 344,658.43

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1.5x scale

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.