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Finding the Fourth Proportional to 385,843.38, 532,485.99 and 216,076.02

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Solution

The fourth proportional to 385,843.38, 532,485.99 and 216,076.02 is: 298,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,843.38 : 532,485.99 = 216,076.02 : x
  2. Step 2: Convert to fraction form
    385,843.38/532,485.99 = 216,076.02/x
  3. Step 3: Cross multiply
    385,843.38x = 532,485.99 × 216,076.02
  4. Step 4: Simplify right side
    385,843.38x = 115,057,453,424.96
  5. Step 5: Solve for x
    x = 115,057,453,424.96/385,843.38
  6. Step 6: Final answer
    x = 298,197.30

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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.