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Finding the Fourth Proportional to 361,991.80, 543,246.90 and 151,780.60

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Solution

The fourth proportional to 361,991.80, 543,246.90 and 151,780.60 is: 227,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,991.80 : 543,246.90 = 151,780.60 : x
  2. Step 2: Convert to fraction form
    361,991.80/543,246.90 = 151,780.60/x
  3. Step 3: Cross multiply
    361,991.80x = 543,246.90 × 151,780.60
  4. Step 4: Simplify right side
    361,991.80x = 82,454,340,430.14
  5. Step 5: Solve for x
    x = 82,454,340,430.14/361,991.80
  6. Step 6: Final answer
    x = 227,779.58

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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.