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Finding the Fourth Proportional to 388,878.48, 536,668.83 and 216,796.41

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Solution

The fourth proportional to 388,878.48, 536,668.83 and 216,796.41 is: 299,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,878.48 : 536,668.83 = 216,796.41 : x
  2. Step 2: Convert to fraction form
    388,878.48/536,668.83 = 216,796.41/x
  3. Step 3: Cross multiply
    388,878.48x = 536,668.83 × 216,796.41
  4. Step 4: Simplify right side
    388,878.48x = 116,347,875,702.90
  5. Step 5: Solve for x
    x = 116,347,875,702.90/388,878.48
  6. Step 6: Final answer
    x = 299,188.26

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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.