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Finding the Fourth Proportional to 428,073.05, 590,740.90 and 234,481.64

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Solution

The fourth proportional to 428,073.05, 590,740.90 and 234,481.64 is: 323,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,073.05 : 590,740.90 = 234,481.64 : x
  2. Step 2: Convert to fraction form
    428,073.05/590,740.90 = 234,481.64/x
  3. Step 3: Cross multiply
    428,073.05x = 590,740.90 × 234,481.64
  4. Step 4: Simplify right side
    428,073.05x = 138,517,891,507.17
  5. Step 5: Solve for x
    x = 138,517,891,507.17/428,073.05
  6. Step 6: Final answer
    x = 323,584.70

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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.