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Finding the Fourth Proportional to 388,957.52, 536,758.20 and 216,873.44

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Solution

The fourth proportional to 388,957.52, 536,758.20 and 216,873.44 is: 299,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,957.52 : 536,758.20 = 216,873.44 : x
  2. Step 2: Convert to fraction form
    388,957.52/536,758.20 = 216,873.44/x
  3. Step 3: Cross multiply
    388,957.52x = 536,758.20 × 216,873.44
  4. Step 4: Simplify right side
    388,957.52x = 116,408,597,282.21
  5. Step 5: Solve for x
    x = 116,408,597,282.21/388,957.52
  6. Step 6: Final answer
    x = 299,283.58

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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.