Home / 331,128.60-496,412.10-120,643.80

Finding the Fourth Proportional to 331,128.60, 496,412.10 and 120,643.80

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Solution

The fourth proportional to 331,128.60, 496,412.10 and 120,643.80 is: 180,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,128.60 : 496,412.10 = 120,643.80 : x
  2. Step 2: Convert to fraction form
    331,128.60/496,412.10 = 120,643.80/x
  3. Step 3: Cross multiply
    331,128.60x = 496,412.10 × 120,643.80
  4. Step 4: Simplify right side
    331,128.60x = 59,889,042,109.98
  5. Step 5: Solve for x
    x = 59,889,042,109.98/331,128.60
  6. Step 6: Final answer
    x = 180,863.39

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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.