Home / 428,850.64-591,814.21-237,865.40

Finding the Fourth Proportional to 428,850.64, 591,814.21 and 237,865.40

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Solution

The fourth proportional to 428,850.64, 591,814.21 and 237,865.40 is: 328,254.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,850.64 : 591,814.21 = 237,865.40 : x
  2. Step 2: Convert to fraction form
    428,850.64/591,814.21 = 237,865.40/x
  3. Step 3: Cross multiply
    428,850.64x = 591,814.21 × 237,865.40
  4. Step 4: Simplify right side
    428,850.64x = 140,772,123,787.33
  5. Step 5: Solve for x
    x = 140,772,123,787.33/428,850.64
  6. Step 6: Final answer
    x = 328,254.43

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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.