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Finding the Fourth Proportional to 368,620.31, 553,004.28 and 115,964.39

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Solution

The fourth proportional to 368,620.31, 553,004.28 and 115,964.39 is: 173,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,620.31 : 553,004.28 = 115,964.39 : x
  2. Step 2: Convert to fraction form
    368,620.31/553,004.28 = 115,964.39/x
  3. Step 3: Cross multiply
    368,620.31x = 553,004.28 × 115,964.39
  4. Step 4: Simplify right side
    368,620.31x = 64,128,801,232.57
  5. Step 5: Solve for x
    x = 64,128,801,232.57/368,620.31
  6. Step 6: Final answer
    x = 173,969.80

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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.