Home / 428,580.10-591,447.72-234,983.76

Finding the Fourth Proportional to 428,580.10, 591,447.72 and 234,983.76

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Solution

The fourth proportional to 428,580.10, 591,447.72 and 234,983.76 is: 324,281.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,580.10 : 591,447.72 = 234,983.76 : x
  2. Step 2: Convert to fraction form
    428,580.10/591,447.72 = 234,983.76/x
  3. Step 3: Cross multiply
    428,580.10x = 591,447.72 × 234,983.76
  4. Step 4: Simplify right side
    428,580.10x = 138,980,609,089.03
  5. Step 5: Solve for x
    x = 138,980,609,089.03/428,580.10
  6. Step 6: Final answer
    x = 324,281.53

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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.