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Finding the Fourth Proportional to 381,017.36, 525,801.48 and 211,251.44

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Solution

The fourth proportional to 381,017.36, 525,801.48 and 211,251.44 is: 291,525.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,017.36 : 525,801.48 = 211,251.44 : x
  2. Step 2: Convert to fraction form
    381,017.36/525,801.48 = 211,251.44/x
  3. Step 3: Cross multiply
    381,017.36x = 525,801.48 × 211,251.44
  4. Step 4: Simplify right side
    381,017.36x = 111,076,319,804.13
  5. Step 5: Solve for x
    x = 111,076,319,804.13/381,017.36
  6. Step 6: Final answer
    x = 291,525.61

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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.