Home / 428,505.48-642,556.76-158,447.03

Finding the Fourth Proportional to 428,505.48, 642,556.76 and 158,447.03

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Solution

The fourth proportional to 428,505.48, 642,556.76 and 158,447.03 is: 237,596.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,505.48 : 642,556.76 = 158,447.03 : x
  2. Step 2: Convert to fraction form
    428,505.48/642,556.76 = 158,447.03/x
  3. Step 3: Cross multiply
    428,505.48x = 642,556.76 × 158,447.03
  4. Step 4: Simplify right side
    428,505.48x = 101,811,206,223.40
  5. Step 5: Solve for x
    x = 101,811,206,223.40/428,505.48
  6. Step 6: Final answer
    x = 237,596.04

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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.