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Finding the Fourth Proportional to 516,312.69, 774,168.33 and 200,400.54

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Solution

The fourth proportional to 516,312.69, 774,168.33 and 200,400.54 is: 300,484.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,312.69 : 774,168.33 = 200,400.54 : x
  2. Step 2: Convert to fraction form
    516,312.69/774,168.33 = 200,400.54/x
  3. Step 3: Cross multiply
    516,312.69x = 774,168.33 × 200,400.54
  4. Step 4: Simplify right side
    516,312.69x = 155,143,751,382.90
  5. Step 5: Solve for x
    x = 155,143,751,382.90/516,312.69
  6. Step 6: Final answer
    x = 300,484.09

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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.