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Finding the Fourth Proportional to 342,665.40, 513,998.10 and 263,933.40

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Solution

The fourth proportional to 342,665.40, 513,998.10 and 263,933.40 is: 395,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,665.40 : 513,998.10 = 263,933.40 : x
  2. Step 2: Convert to fraction form
    342,665.40/513,998.10 = 263,933.40/x
  3. Step 3: Cross multiply
    342,665.40x = 513,998.10 × 263,933.40
  4. Step 4: Simplify right side
    342,665.40x = 135,661,266,126.54
  5. Step 5: Solve for x
    x = 135,661,266,126.54/342,665.40
  6. Step 6: Final answer
    x = 395,900.10

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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.