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Finding the Fourth Proportional to 490,329.30, 735,479.31 and 135,364.98

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Solution

The fourth proportional to 490,329.30, 735,479.31 and 135,364.98 is: 203,043.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,329.30 : 735,479.31 = 135,364.98 : x
  2. Step 2: Convert to fraction form
    490,329.30/735,479.31 = 135,364.98/x
  3. Step 3: Cross multiply
    490,329.30x = 735,479.31 × 135,364.98
  4. Step 4: Simplify right side
    490,329.30x = 99,558,142,088.56
  5. Step 5: Solve for x
    x = 99,558,142,088.56/490,329.30
  6. Step 6: Final answer
    x = 203,043.43

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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.