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Finding the Fourth Proportional to 388,087.40, 580,964.70 and 230,234.60

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Solution

The fourth proportional to 388,087.40, 580,964.70 and 230,234.60 is: 344,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,087.40 : 580,964.70 = 230,234.60 : x
  2. Step 2: Convert to fraction form
    388,087.40/580,964.70 = 230,234.60/x
  3. Step 3: Cross multiply
    388,087.40x = 580,964.70 × 230,234.60
  4. Step 4: Simplify right side
    388,087.40x = 133,758,175,318.62
  5. Step 5: Solve for x
    x = 133,758,175,318.62/388,087.40
  6. Step 6: Final answer
    x = 344,659.93

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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.