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Finding the Fourth Proportional to 392,145.16, 541,160.28 and 222,379.28

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Solution

The fourth proportional to 392,145.16, 541,160.28 and 222,379.28 is: 306,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,145.16 : 541,160.28 = 222,379.28 : x
  2. Step 2: Convert to fraction form
    392,145.16/541,160.28 = 222,379.28/x
  3. Step 3: Cross multiply
    392,145.16x = 541,160.28 × 222,379.28
  4. Step 4: Simplify right side
    392,145.16x = 120,342,833,431.00
  5. Step 5: Solve for x
    x = 120,342,833,431.00/392,145.16
  6. Step 6: Final answer
    x = 306,883.38

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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.