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Finding the Fourth Proportional to 428,358.29, 591,137.93 and 237,374.87

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Solution

The fourth proportional to 428,358.29, 591,137.93 and 237,374.87 is: 327,579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,358.29 : 591,137.93 = 237,374.87 : x
  2. Step 2: Convert to fraction form
    428,358.29/591,137.93 = 237,374.87/x
  3. Step 3: Cross multiply
    428,358.29x = 591,137.93 × 237,374.87
  4. Step 4: Simplify right side
    428,358.29x = 140,321,286,923.57
  5. Step 5: Solve for x
    x = 140,321,286,923.57/428,358.29
  6. Step 6: Final answer
    x = 327,579.25

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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.