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Finding the Fourth Proportional to 361,987.38, 543,059.12 and 109,246.74

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Solution

The fourth proportional to 361,987.38, 543,059.12 and 109,246.74 is: 163,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,987.38 : 543,059.12 = 109,246.74 : x
  2. Step 2: Convert to fraction form
    361,987.38/543,059.12 = 109,246.74/x
  3. Step 3: Cross multiply
    361,987.38x = 543,059.12 × 109,246.74
  4. Step 4: Simplify right side
    361,987.38x = 59,327,437,941.04
  5. Step 5: Solve for x
    x = 59,327,437,941.04/361,987.38
  6. Step 6: Final answer
    x = 163,893.66

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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.