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Finding the Fourth Proportional to 513,146.80, 769,720.20 and 336,199.60

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Solution

The fourth proportional to 513,146.80, 769,720.20 and 336,199.60 is: 504,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,146.80 : 769,720.20 = 336,199.60 : x
  2. Step 2: Convert to fraction form
    513,146.80/769,720.20 = 336,199.60/x
  3. Step 3: Cross multiply
    513,146.80x = 769,720.20 × 336,199.60
  4. Step 4: Simplify right side
    513,146.80x = 258,779,623,351.92
  5. Step 5: Solve for x
    x = 258,779,623,351.92/513,146.80
  6. Step 6: Final answer
    x = 504,299.40

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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.