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Finding the Fourth Proportional to 438,305.97, 657,455.50 and 235,996.86

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Solution

The fourth proportional to 438,305.97, 657,455.50 and 235,996.86 is: 353,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,305.97 : 657,455.50 = 235,996.86 : x
  2. Step 2: Convert to fraction form
    438,305.97/657,455.50 = 235,996.86/x
  3. Step 3: Cross multiply
    438,305.97x = 657,455.50 × 235,996.86
  4. Step 4: Simplify right side
    438,305.97x = 155,157,433,589.73
  5. Step 5: Solve for x
    x = 155,157,433,589.73/438,305.97
  6. Step 6: Final answer
    x = 353,993.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.