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Finding the Fourth Proportional to 388,702.62, 536,226.34 and 227,458.76

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Solution

The fourth proportional to 388,702.62, 536,226.34 and 227,458.76 is: 313,785.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,702.62 : 536,226.34 = 227,458.76 : x
  2. Step 2: Convert to fraction form
    388,702.62/536,226.34 = 227,458.76/x
  3. Step 3: Cross multiply
    388,702.62x = 536,226.34 × 227,458.76
  4. Step 4: Simplify right side
    388,702.62x = 121,969,378,375.74
  5. Step 5: Solve for x
    x = 121,969,378,375.74/388,702.62
  6. Step 6: Final answer
    x = 313,785.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.