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Finding the Fourth Proportional to 510,147.20, 765,220.80 and 323,369.60

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Solution

The fourth proportional to 510,147.20, 765,220.80 and 323,369.60 is: 485,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,147.20 : 765,220.80 = 323,369.60 : x
  2. Step 2: Convert to fraction form
    510,147.20/765,220.80 = 323,369.60/x
  3. Step 3: Cross multiply
    510,147.20x = 765,220.80 × 323,369.60
  4. Step 4: Simplify right side
    510,147.20x = 247,449,144,007.68
  5. Step 5: Solve for x
    x = 247,449,144,007.68/510,147.20
  6. Step 6: Final answer
    x = 485,054.40

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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.