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Finding the Fourth Proportional to 368,644.80, 552,978.12 and 143,996.16

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Solution

The fourth proportional to 368,644.80, 552,978.12 and 143,996.16 is: 215,998.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,644.80 : 552,978.12 = 143,996.16 : x
  2. Step 2: Convert to fraction form
    368,644.80/552,978.12 = 143,996.16/x
  3. Step 3: Cross multiply
    368,644.80x = 552,978.12 × 143,996.16
  4. Step 4: Simplify right side
    368,644.80x = 79,626,725,844.02
  5. Step 5: Solve for x
    x = 79,626,725,844.02/368,644.80
  6. Step 6: Final answer
    x = 215,998.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.