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Finding the Fourth Proportional to 312,174.39, 468,208.81 and 87,483.15

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Solution

The fourth proportional to 312,174.39, 468,208.81 and 87,483.15 is: 131,209.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,174.39 : 468,208.81 = 87,483.15 : x
  2. Step 2: Convert to fraction form
    312,174.39/468,208.81 = 87,483.15/x
  3. Step 3: Cross multiply
    312,174.39x = 468,208.81 × 87,483.15
  4. Step 4: Simplify right side
    312,174.39x = 40,960,381,556.55
  5. Step 5: Solve for x
    x = 40,960,381,556.55/312,174.39
  6. Step 6: Final answer
    x = 131,209.94

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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.