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Finding the Fourth Proportional to 511,273.28, 766,912.08 and 156,285.92

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Solution

The fourth proportional to 511,273.28, 766,912.08 and 156,285.92 is: 234,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,273.28 : 766,912.08 = 156,285.92 : x
  2. Step 2: Convert to fraction form
    511,273.28/766,912.08 = 156,285.92/x
  3. Step 3: Cross multiply
    511,273.28x = 766,912.08 × 156,285.92
  4. Step 4: Simplify right side
    511,273.28x = 119,857,559,981.91
  5. Step 5: Solve for x
    x = 119,857,559,981.91/511,273.28
  6. Step 6: Final answer
    x = 234,429.54

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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.