Home / 427,787.55-641,647.91-112,236.26

Finding the Fourth Proportional to 427,787.55, 641,647.91 and 112,236.26

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Solution

The fourth proportional to 427,787.55, 641,647.91 and 112,236.26 is: 168,345.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,787.55 : 641,647.91 = 112,236.26 : x
  2. Step 2: Convert to fraction form
    427,787.55/641,647.91 = 112,236.26/x
  3. Step 3: Cross multiply
    427,787.55x = 641,647.91 × 112,236.26
  4. Step 4: Simplify right side
    427,787.55x = 72,016,158,727.57
  5. Step 5: Solve for x
    x = 72,016,158,727.57/427,787.55
  6. Step 6: Final answer
    x = 168,345.62

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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.