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Finding the Fourth Proportional to 386,353.56, 533,181.76 and 225,182.64

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Solution

The fourth proportional to 386,353.56, 533,181.76 and 225,182.64 is: 310,760.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,353.56 : 533,181.76 = 225,182.64 : x
  2. Step 2: Convert to fraction form
    386,353.56/533,181.76 = 225,182.64/x
  3. Step 3: Cross multiply
    386,353.56x = 533,181.76 × 225,182.64
  4. Step 4: Simplify right side
    386,353.56x = 120,063,276,316.65
  5. Step 5: Solve for x
    x = 120,063,276,316.65/386,353.56
  6. Step 6: Final answer
    x = 310,760.11

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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.