Home / 341,784.40-512,766.20-131,429.20

Finding the Fourth Proportional to 341,784.40, 512,766.20 and 131,429.20

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Solution

The fourth proportional to 341,784.40, 512,766.20 and 131,429.20 is: 197,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,784.40 : 512,766.20 = 131,429.20 : x
  2. Step 2: Convert to fraction form
    341,784.40/512,766.20 = 131,429.20/x
  3. Step 3: Cross multiply
    341,784.40x = 512,766.20 × 131,429.20
  4. Step 4: Simplify right side
    341,784.40x = 67,392,451,453.04
  5. Step 5: Solve for x
    x = 67,392,451,453.04/341,784.40
  6. Step 6: Final answer
    x = 197,178.25

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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.