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Finding the Fourth Proportional to 341,638.80, 512,458.20 and 131,281.80

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Solution

The fourth proportional to 341,638.80, 512,458.20 and 131,281.80 is: 196,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,638.80 : 512,458.20 = 131,281.80 : x
  2. Step 2: Convert to fraction form
    341,638.80/512,458.20 = 131,281.80/x
  3. Step 3: Cross multiply
    341,638.80x = 512,458.20 × 131,281.80
  4. Step 4: Simplify right side
    341,638.80x = 67,276,434,920.76
  5. Step 5: Solve for x
    x = 67,276,434,920.76/341,638.80
  6. Step 6: Final answer
    x = 196,922.70

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1.5x scale

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.