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Finding the Fourth Proportional to 312,405.68, 468,511.43 and 112,699.98

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Solution

The fourth proportional to 312,405.68, 468,511.43 and 112,699.98 is: 169,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,405.68 : 468,511.43 = 112,699.98 : x
  2. Step 2: Convert to fraction form
    312,405.68/468,511.43 = 112,699.98/x
  3. Step 3: Cross multiply
    312,405.68x = 468,511.43 × 112,699.98
  4. Step 4: Simplify right side
    312,405.68x = 52,801,228,227.27
  5. Step 5: Solve for x
    x = 52,801,228,227.27/312,405.68
  6. Step 6: Final answer
    x = 169,014.94

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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.