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Finding the Fourth Proportional to 427,569.80, 641,391.42 and 112,026.74

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Solution

The fourth proportional to 427,569.80, 641,391.42 and 112,026.74 is: 168,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,569.80 : 641,391.42 = 112,026.74 : x
  2. Step 2: Convert to fraction form
    427,569.80/641,391.42 = 112,026.74/x
  3. Step 3: Cross multiply
    427,569.80x = 641,391.42 × 112,026.74
  4. Step 4: Simplify right side
    427,569.80x = 71,852,989,846.57
  5. Step 5: Solve for x
    x = 71,852,989,846.57/427,569.80
  6. Step 6: Final answer
    x = 168,049.73

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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.