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Finding the Fourth Proportional to 388,665.84, 536,375.52 and 216,584.04

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Solution

The fourth proportional to 388,665.84, 536,375.52 and 216,584.04 is: 298,895.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,665.84 : 536,375.52 = 216,584.04 : x
  2. Step 2: Convert to fraction form
    388,665.84/536,375.52 = 216,584.04/x
  3. Step 3: Cross multiply
    388,665.84x = 536,375.52 × 216,584.04
  4. Step 4: Simplify right side
    388,665.84x = 116,170,379,090.11
  5. Step 5: Solve for x
    x = 116,170,379,090.11/388,665.84
  6. Step 6: Final answer
    x = 298,895.26

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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.