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Finding the Fourth Proportional to 312,390.52, 468,603.93 and 87,768.46

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Solution

The fourth proportional to 312,390.52, 468,603.93 and 87,768.46 is: 131,657.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,390.52 : 468,603.93 = 87,768.46 : x
  2. Step 2: Convert to fraction form
    312,390.52/468,603.93 = 87,768.46/x
  3. Step 3: Cross multiply
    312,390.52x = 468,603.93 × 87,768.46
  4. Step 4: Simplify right side
    312,390.52x = 41,128,645,286.05
  5. Step 5: Solve for x
    x = 41,128,645,286.05/312,390.52
  6. Step 6: Final answer
    x = 131,657.79

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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.