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Finding the Fourth Proportional to 275,960.25, 380,825.51 and 156,728.25

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Solution

The fourth proportional to 275,960.25, 380,825.51 and 156,728.25 is: 216,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,960.25 : 380,825.51 = 156,728.25 : x
  2. Step 2: Convert to fraction form
    275,960.25/380,825.51 = 156,728.25/x
  3. Step 3: Cross multiply
    275,960.25x = 380,825.51 × 156,728.25
  4. Step 4: Simplify right side
    275,960.25x = 59,686,114,954.02
  5. Step 5: Solve for x
    x = 59,686,114,954.02/275,960.25
  6. Step 6: Final answer
    x = 216,285.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.