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Finding the Fourth Proportional to 513,019.44, 769,528.08 and 133,938.72

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Solution

The fourth proportional to 513,019.44, 769,528.08 and 133,938.72 is: 200,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,019.44 : 769,528.08 = 133,938.72 : x
  2. Step 2: Convert to fraction form
    513,019.44/769,528.08 = 133,938.72/x
  3. Step 3: Cross multiply
    513,019.44x = 769,528.08 × 133,938.72
  4. Step 4: Simplify right side
    513,019.44x = 103,069,606,039.26
  5. Step 5: Solve for x
    x = 103,069,606,039.26/513,019.44
  6. Step 6: Final answer
    x = 200,907.80

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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.