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Finding the Fourth Proportional to 312,806.92, 468,860.44 and 135,047.56

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Solution

The fourth proportional to 312,806.92, 468,860.44 and 135,047.56 is: 202,420.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,806.92 : 468,860.44 = 135,047.56 : x
  2. Step 2: Convert to fraction form
    312,806.92/468,860.44 = 135,047.56/x
  3. Step 3: Cross multiply
    312,806.92x = 468,860.44 × 135,047.56
  4. Step 4: Simplify right side
    312,806.92x = 63,318,458,402.53
  5. Step 5: Solve for x
    x = 63,318,458,402.53/312,806.92
  6. Step 6: Final answer
    x = 202,420.26

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1.5x scale

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.