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Finding the Fourth Proportional to 386,760, 533,728.96 and 235,888.32

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Solution

The fourth proportional to 386,760, 533,728.96 and 235,888.32 is: 325,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,760 : 533,728.96 = 235,888.32 : x
  2. Step 2: Convert to fraction form
    386,760/533,728.96 = 235,888.32/x
  3. Step 3: Cross multiply
    386,760x = 533,728.96 × 235,888.32
  4. Step 4: Simplify right side
    386,760x = 125,900,427,709.75
  5. Step 5: Solve for x
    x = 125,900,427,709.75/386,760
  6. Step 6: Final answer
    x = 325,525.98

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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.