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Finding the Fourth Proportional to 386,395.44, 533,260.44 and 225,302.64

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Solution

The fourth proportional to 386,395.44, 533,260.44 and 225,302.64 is: 310,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,395.44 : 533,260.44 = 225,302.64 : x
  2. Step 2: Convert to fraction form
    386,395.44/533,260.44 = 225,302.64/x
  3. Step 3: Cross multiply
    386,395.44x = 533,260.44 × 225,302.64
  4. Step 4: Simplify right side
    386,395.44x = 120,144,984,939.56
  5. Step 5: Solve for x
    x = 120,144,984,939.56/386,395.44
  6. Step 6: Final answer
    x = 310,937.90

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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.