Home / 428,365.68-591,137.55-234,771.90

Finding the Fourth Proportional to 428,365.68, 591,137.55 and 234,771.90

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Solution

The fourth proportional to 428,365.68, 591,137.55 and 234,771.90 is: 323,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,365.68 : 591,137.55 = 234,771.90 : x
  2. Step 2: Convert to fraction form
    428,365.68/591,137.55 = 234,771.90/x
  3. Step 3: Cross multiply
    428,365.68x = 591,137.55 × 234,771.90
  4. Step 4: Simplify right side
    428,365.68x = 138,782,485,774.85
  5. Step 5: Solve for x
    x = 138,782,485,774.85/428,365.68
  6. Step 6: Final answer
    x = 323,981.34

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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.