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Finding the Fourth Proportional to 490,612.40, 735,529.80 and 268,996.40

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Solution

The fourth proportional to 490,612.40, 735,529.80 and 268,996.40 is: 403,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,612.40 : 735,529.80 = 268,996.40 : x
  2. Step 2: Convert to fraction form
    490,612.40/735,529.80 = 268,996.40/x
  3. Step 3: Cross multiply
    490,612.40x = 735,529.80 × 268,996.40
  4. Step 4: Simplify right side
    490,612.40x = 197,854,868,292.72
  5. Step 5: Solve for x
    x = 197,854,868,292.72/490,612.40
  6. Step 6: Final answer
    x = 403,281.43

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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.