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Finding the Fourth Proportional to 243,904.87, 365,820.31 and 66,425.86

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Solution

The fourth proportional to 243,904.87, 365,820.31 and 66,425.86 is: 99,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,904.87 : 365,820.31 = 66,425.86 : x
  2. Step 2: Convert to fraction form
    243,904.87/365,820.31 = 66,425.86/x
  3. Step 3: Cross multiply
    243,904.87x = 365,820.31 × 66,425.86
  4. Step 4: Simplify right side
    243,904.87x = 24,299,928,697.22
  5. Step 5: Solve for x
    x = 24,299,928,697.22/243,904.87
  6. Step 6: Final answer
    x = 99,628.71

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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.