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Finding the Fourth Proportional to 520,120.73, 780,243.64 and 183,091.39

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Solution

The fourth proportional to 520,120.73, 780,243.64 and 183,091.39 is: 274,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,120.73 : 780,243.64 = 183,091.39 : x
  2. Step 2: Convert to fraction form
    520,120.73/780,243.64 = 183,091.39/x
  3. Step 3: Cross multiply
    520,120.73x = 780,243.64 × 183,091.39
  4. Step 4: Simplify right side
    520,120.73x = 142,855,890,177.92
  5. Step 5: Solve for x
    x = 142,855,890,177.92/520,120.73
  6. Step 6: Final answer
    x = 274,659.10

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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.