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Finding the Fourth Proportional to 490,615.40, 735,534.30 and 268,999.40

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Solution

The fourth proportional to 490,615.40, 735,534.30 and 268,999.40 is: 403,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,615.40 : 735,534.30 = 268,999.40 : x
  2. Step 2: Convert to fraction form
    490,615.40/735,534.30 = 268,999.40/x
  3. Step 3: Cross multiply
    490,615.40x = 735,534.30 × 268,999.40
  4. Step 4: Simplify right side
    490,615.40x = 197,858,285,379.42
  5. Step 5: Solve for x
    x = 197,858,285,379.42/490,615.40
  6. Step 6: Final answer
    x = 403,285.92

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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.