Home / 428,906.31-591,961.65-237,981.21

Finding the Fourth Proportional to 428,906.31, 591,961.65 and 237,981.21

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Solution

The fourth proportional to 428,906.31, 591,961.65 and 237,981.21 is: 328,453.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,906.31 : 591,961.65 = 237,981.21 : x
  2. Step 2: Convert to fraction form
    428,906.31/591,961.65 = 237,981.21/x
  3. Step 3: Cross multiply
    428,906.31x = 591,961.65 × 237,981.21
  4. Step 4: Simplify right side
    428,906.31x = 140,875,749,740.60
  5. Step 5: Solve for x
    x = 140,875,749,740.60/428,906.31
  6. Step 6: Final answer
    x = 328,453.43

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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.