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Finding the Fourth Proportional to 312,386.44, 468,597.82 and 87,764.39

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Solution

The fourth proportional to 312,386.44, 468,597.82 and 87,764.39 is: 131,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,386.44 : 468,597.82 = 87,764.39 : x
  2. Step 2: Convert to fraction form
    312,386.44/468,597.82 = 87,764.39/x
  3. Step 3: Cross multiply
    312,386.44x = 468,597.82 × 87,764.39
  4. Step 4: Simplify right side
    312,386.44x = 41,126,199,992.52
  5. Step 5: Solve for x
    x = 41,126,199,992.52/312,386.44
  6. Step 6: Final answer
    x = 131,651.68

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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.