Home / 428,405.31-591,190.25-237,417.03

Finding the Fourth Proportional to 428,405.31, 591,190.25 and 237,417.03

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Solution

The fourth proportional to 428,405.31, 591,190.25 and 237,417.03 is: 327,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,405.31 : 591,190.25 = 237,417.03 : x
  2. Step 2: Convert to fraction form
    428,405.31/591,190.25 = 237,417.03/x
  3. Step 3: Cross multiply
    428,405.31x = 591,190.25 × 237,417.03
  4. Step 4: Simplify right side
    428,405.31x = 140,358,632,132.87
  5. Step 5: Solve for x
    x = 140,358,632,132.87/428,405.31
  6. Step 6: Final answer
    x = 327,630.47

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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.