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Finding the Fourth Proportional to 312,011.93, 468,017.88 and 87,405.62

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Solution

The fourth proportional to 312,011.93, 468,017.88 and 87,405.62 is: 131,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,011.93 : 468,017.88 = 87,405.62 : x
  2. Step 2: Convert to fraction form
    312,011.93/468,017.88 = 87,405.62/x
  3. Step 3: Cross multiply
    312,011.93x = 468,017.88 × 87,405.62
  4. Step 4: Simplify right side
    312,011.93x = 40,907,392,972.49
  5. Step 5: Solve for x
    x = 40,907,392,972.49/312,011.93
  6. Step 6: Final answer
    x = 131,108.43

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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.