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Finding the Fourth Proportional to 202,316.80, 303,475.20 and 135,788.80

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Solution

The fourth proportional to 202,316.80, 303,475.20 and 135,788.80 is: 203,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,316.80 : 303,475.20 = 135,788.80 : x
  2. Step 2: Convert to fraction form
    202,316.80/303,475.20 = 135,788.80/x
  3. Step 3: Cross multiply
    202,316.80x = 303,475.20 × 135,788.80
  4. Step 4: Simplify right side
    202,316.80x = 41,208,533,237.76
  5. Step 5: Solve for x
    x = 41,208,533,237.76/202,316.80
  6. Step 6: Final answer
    x = 203,683.20

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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.