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Finding the Fourth Proportional to 663,431.50, 995,147.34 and 220,199.50

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Solution

The fourth proportional to 663,431.50, 995,147.34 and 220,199.50 is: 330,299.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,431.50 : 995,147.34 = 220,199.50 : x
  2. Step 2: Convert to fraction form
    663,431.50/995,147.34 = 220,199.50/x
  3. Step 3: Cross multiply
    663,431.50x = 995,147.34 × 220,199.50
  4. Step 4: Simplify right side
    663,431.50x = 219,130,946,694.33
  5. Step 5: Solve for x
    x = 219,130,946,694.33/663,431.50
  6. Step 6: Final answer
    x = 330,299.28

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Double scale
Find fourth proportional to 663,432.50, 995,148.84 and 220,200.50
Similar ratio
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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.