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Finding the Fourth Proportional to 422,661.70, 583,263.90 and 231,670.96

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Solution

The fourth proportional to 422,661.70, 583,263.90 and 231,670.96 is: 319,700.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,661.70 : 583,263.90 = 231,670.96 : x
  2. Step 2: Convert to fraction form
    422,661.70/583,263.90 = 231,670.96/x
  3. Step 3: Cross multiply
    422,661.70x = 583,263.90 × 231,670.96
  4. Step 4: Simplify right side
    422,661.70x = 135,125,307,646.34
  5. Step 5: Solve for x
    x = 135,125,307,646.34/422,661.70
  6. Step 6: Final answer
    x = 319,700.86

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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.