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Finding the Fourth Proportional to 243,365.28, 365,007.96 and 85,556.76

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Solution

The fourth proportional to 243,365.28, 365,007.96 and 85,556.76 is: 128,321.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,365.28 : 365,007.96 = 85,556.76 : x
  2. Step 2: Convert to fraction form
    243,365.28/365,007.96 = 85,556.76/x
  3. Step 3: Cross multiply
    243,365.28x = 365,007.96 × 85,556.76
  4. Step 4: Simplify right side
    243,365.28x = 31,228,898,431.81
  5. Step 5: Solve for x
    x = 31,228,898,431.81/243,365.28
  6. Step 6: Final answer
    x = 128,321.09

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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.