Home / 428,462.45-642,749.57-158,553.85

Finding the Fourth Proportional to 428,462.45, 642,749.57 and 158,553.85

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Solution

The fourth proportional to 428,462.45, 642,749.57 and 158,553.85 is: 237,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,462.45 : 642,749.57 = 158,553.85 : x
  2. Step 2: Convert to fraction form
    428,462.45/642,749.57 = 158,553.85/x
  3. Step 3: Cross multiply
    428,462.45x = 642,749.57 × 158,553.85
  4. Step 4: Simplify right side
    428,462.45x = 101,910,418,909.35
  5. Step 5: Solve for x
    x = 101,910,418,909.35/428,462.45
  6. Step 6: Final answer
    x = 237,851.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.