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Finding the Fourth Proportional to 428,887.31, 591,883.81 and 237,900.65

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Solution

The fourth proportional to 428,887.31, 591,883.81 and 237,900.65 is: 328,313.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,887.31 : 591,883.81 = 237,900.65 : x
  2. Step 2: Convert to fraction form
    428,887.31/591,883.81 = 237,900.65/x
  3. Step 3: Cross multiply
    428,887.31x = 591,883.81 × 237,900.65
  4. Step 4: Simplify right side
    428,887.31x = 140,809,539,569.31
  5. Step 5: Solve for x
    x = 140,809,539,569.31/428,887.31
  6. Step 6: Final answer
    x = 328,313.61

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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.