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Finding the Fourth Proportional to 243,378.54, 365,102.37 and 74,912.89

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Solution

The fourth proportional to 243,378.54, 365,102.37 and 74,912.89 is: 112,379.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,378.54 : 365,102.37 = 74,912.89 : x
  2. Step 2: Convert to fraction form
    243,378.54/365,102.37 = 74,912.89/x
  3. Step 3: Cross multiply
    243,378.54x = 365,102.37 × 74,912.89
  4. Step 4: Simplify right side
    243,378.54x = 27,350,873,682.55
  5. Step 5: Solve for x
    x = 27,350,873,682.55/243,378.54
  6. Step 6: Final answer
    x = 112,379.97

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1.5x scale

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.