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Finding the Fourth Proportional to 428,887.17, 591,855.26 and 237,898.89

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Solution

The fourth proportional to 428,887.17, 591,855.26 and 237,898.89 is: 328,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,887.17 : 591,855.26 = 237,898.89 : x
  2. Step 2: Convert to fraction form
    428,887.17/591,855.26 = 237,898.89/x
  3. Step 3: Cross multiply
    428,887.17x = 591,855.26 × 237,898.89
  4. Step 4: Simplify right side
    428,887.17x = 140,801,708,205.17
  5. Step 5: Solve for x
    x = 140,801,708,205.17/428,887.17
  6. Step 6: Final answer
    x = 328,295.45

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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.