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Finding the Fourth Proportional to 361,978.20, 543,161.70 and 151,637.40

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Solution

The fourth proportional to 361,978.20, 543,161.70 and 151,637.40 is: 227,537.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,978.20 : 543,161.70 = 151,637.40 : x
  2. Step 2: Convert to fraction form
    361,978.20/543,161.70 = 151,637.40/x
  3. Step 3: Cross multiply
    361,978.20x = 543,161.70 × 151,637.40
  4. Step 4: Simplify right side
    361,978.20x = 82,363,627,967.58
  5. Step 5: Solve for x
    x = 82,363,627,967.58/361,978.20
  6. Step 6: Final answer
    x = 227,537.54

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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.