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Finding the Fourth Proportional to 202,383.90, 303,316.65 and 155,403.90

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Solution

The fourth proportional to 202,383.90, 303,316.65 and 155,403.90 is: 232,906.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,383.90 : 303,316.65 = 155,403.90 : x
  2. Step 2: Convert to fraction form
    202,383.90/303,316.65 = 155,403.90/x
  3. Step 3: Cross multiply
    202,383.90x = 303,316.65 × 155,403.90
  4. Step 4: Simplify right side
    202,383.90x = 47,136,590,344.94
  5. Step 5: Solve for x
    x = 47,136,590,344.94/202,383.90
  6. Step 6: Final answer
    x = 232,906.82

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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.