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Finding the Fourth Proportional to 401,645.39, 602,488.09 and 131,749.54

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Solution

The fourth proportional to 401,645.39, 602,488.09 and 131,749.54 is: 197,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,645.39 : 602,488.09 = 131,749.54 : x
  2. Step 2: Convert to fraction form
    401,645.39/602,488.09 = 131,749.54/x
  3. Step 3: Cross multiply
    401,645.39x = 602,488.09 × 131,749.54
  4. Step 4: Simplify right side
    401,645.39x = 79,377,527,371.45
  5. Step 5: Solve for x
    x = 79,377,527,371.45/401,645.39
  6. Step 6: Final answer
    x = 197,630.87

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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.