Home / 211,869.60-317,512.80-140,589.60

Finding the Fourth Proportional to 211,869.60, 317,512.80 and 140,589.60

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Solution

The fourth proportional to 211,869.60, 317,512.80 and 140,589.60 is: 210,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,869.60 : 317,512.80 = 140,589.60 : x
  2. Step 2: Convert to fraction form
    211,869.60/317,512.80 = 140,589.60/x
  3. Step 3: Cross multiply
    211,869.60x = 317,512.80 × 140,589.60
  4. Step 4: Simplify right side
    211,869.60x = 44,638,997,546.88
  5. Step 5: Solve for x
    x = 44,638,997,546.88/211,869.60
  6. Step 6: Final answer
    x = 210,690.90

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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.