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Finding the Fourth Proportional to 312,810.72, 469,243.68 and 88,173.04

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Solution

The fourth proportional to 312,810.72, 469,243.68 and 88,173.04 is: 132,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,810.72 : 469,243.68 = 88,173.04 : x
  2. Step 2: Convert to fraction form
    312,810.72/469,243.68 = 88,173.04/x
  3. Step 3: Cross multiply
    312,810.72x = 469,243.68 × 88,173.04
  4. Step 4: Simplify right side
    312,810.72x = 41,374,641,766.39
  5. Step 5: Solve for x
    x = 41,374,641,766.39/312,810.72
  6. Step 6: Final answer
    x = 132,267.34

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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.