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Finding the Fourth Proportional to 519,990.73, 780,025.31 and 155,223.53

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Solution

The fourth proportional to 519,990.73, 780,025.31 and 155,223.53 is: 232,847.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,990.73 : 780,025.31 = 155,223.53 : x
  2. Step 2: Convert to fraction form
    519,990.73/780,025.31 = 155,223.53/x
  3. Step 3: Cross multiply
    519,990.73x = 780,025.31 × 155,223.53
  4. Step 4: Simplify right side
    519,990.73x = 121,078,282,107.54
  5. Step 5: Solve for x
    x = 121,078,282,107.54/519,990.73
  6. Step 6: Final answer
    x = 232,847.00

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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.