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Finding the Fourth Proportional to 428,882.70, 591,846.71 and 247,588.50

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Solution

The fourth proportional to 428,882.70, 591,846.71 and 247,588.50 is: 341,665.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,882.70 : 591,846.71 = 247,588.50 : x
  2. Step 2: Convert to fraction form
    428,882.70/591,846.71 = 247,588.50/x
  3. Step 3: Cross multiply
    428,882.70x = 591,846.71 × 247,588.50
  4. Step 4: Simplify right side
    428,882.70x = 146,534,437,920.89
  5. Step 5: Solve for x
    x = 146,534,437,920.89/428,882.70
  6. Step 6: Final answer
    x = 341,665.54

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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.