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Finding the Fourth Proportional to 305,520.62, 458,171.57 and 105,787.37

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Solution

The fourth proportional to 305,520.62, 458,171.57 and 105,787.37 is: 158,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,520.62 : 458,171.57 = 105,787.37 : x
  2. Step 2: Convert to fraction form
    305,520.62/458,171.57 = 105,787.37/x
  3. Step 3: Cross multiply
    305,520.62x = 458,171.57 × 105,787.37
  4. Step 4: Simplify right side
    305,520.62x = 48,468,762,579.28
  5. Step 5: Solve for x
    x = 48,468,762,579.28/305,520.62
  6. Step 6: Final answer
    x = 158,643.18

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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.