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Finding the Fourth Proportional to 312,483.44, 468,628.41 and 112,778.55

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Solution

The fourth proportional to 312,483.44, 468,628.41 and 112,778.55 is: 169,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,483.44 : 468,628.41 = 112,778.55 : x
  2. Step 2: Convert to fraction form
    312,483.44/468,628.41 = 112,778.55/x
  3. Step 3: Cross multiply
    312,483.44x = 468,628.41 × 112,778.55
  4. Step 4: Simplify right side
    312,483.44x = 52,851,232,568.61
  5. Step 5: Solve for x
    x = 52,851,232,568.61/312,483.44
  6. Step 6: Final answer
    x = 169,132.91

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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.