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Finding the Fourth Proportional to 548,992.81, 757,609.97 and 307,275.38

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Solution

The fourth proportional to 548,992.81, 757,609.97 and 307,275.38 is: 424,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,992.81 : 757,609.97 = 307,275.38 : x
  2. Step 2: Convert to fraction form
    548,992.81/757,609.97 = 307,275.38/x
  3. Step 3: Cross multiply
    548,992.81x = 757,609.97 × 307,275.38
  4. Step 4: Simplify right side
    548,992.81x = 232,794,886,099.11
  5. Step 5: Solve for x
    x = 232,794,886,099.11/548,992.81
  6. Step 6: Final answer
    x = 424,039.96

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.