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Finding the Fourth Proportional to 388,636.73, 536,304.52 and 216,545.80

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Solution

The fourth proportional to 388,636.73, 536,304.52 and 216,545.80 is: 298,825.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,636.73 : 536,304.52 = 216,545.80 : x
  2. Step 2: Convert to fraction form
    388,636.73/536,304.52 = 216,545.80/x
  3. Step 3: Cross multiply
    388,636.73x = 536,304.52 × 216,545.80
  4. Step 4: Simplify right side
    388,636.73x = 116,134,491,327.02
  5. Step 5: Solve for x
    x = 116,134,491,327.02/388,636.73
  6. Step 6: Final answer
    x = 298,825.31

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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.