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Finding the Fourth Proportional to 428,864, 591,832.80 and 250,050.56

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Solution

The fourth proportional to 428,864, 591,832.80 and 250,050.56 is: 345,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,864 : 591,832.80 = 250,050.56 : x
  2. Step 2: Convert to fraction form
    428,864/591,832.80 = 250,050.56/x
  3. Step 3: Cross multiply
    428,864x = 591,832.80 × 250,050.56
  4. Step 4: Simplify right side
    428,864x = 147,988,123,066.37
  5. Step 5: Solve for x
    x = 147,988,123,066.37/428,864
  6. Step 6: Final answer
    x = 345,070.05

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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.