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Finding the Fourth Proportional to 428,690.70, 591,564.33 and 237,697.02

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Solution

The fourth proportional to 428,690.70, 591,564.33 and 237,697.02 is: 328,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,690.70 : 591,564.33 = 237,697.02 : x
  2. Step 2: Convert to fraction form
    428,690.70/591,564.33 = 237,697.02/x
  3. Step 3: Cross multiply
    428,690.70x = 591,564.33 × 237,697.02
  4. Step 4: Simplify right side
    428,690.70x = 140,613,078,379.30
  5. Step 5: Solve for x
    x = 140,613,078,379.30/428,690.70
  6. Step 6: Final answer
    x = 328,005.90

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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.