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Finding the Fourth Proportional to 663,200.80, 995,146.80 and 289,261.60

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Solution

The fourth proportional to 663,200.80, 995,146.80 and 289,261.60 is: 434,043.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,200.80 : 995,146.80 = 289,261.60 : x
  2. Step 2: Convert to fraction form
    663,200.80/995,146.80 = 289,261.60/x
  3. Step 3: Cross multiply
    663,200.80x = 995,146.80 × 289,261.60
  4. Step 4: Simplify right side
    663,200.80x = 287,857,755,602.88
  5. Step 5: Solve for x
    x = 287,857,755,602.88/663,200.80
  6. Step 6: Final answer
    x = 434,043.14

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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.