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Finding the Fourth Proportional to 303,543.33, 455,235.71 and 90,253.81

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Solution

The fourth proportional to 303,543.33, 455,235.71 and 90,253.81 is: 135,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,543.33 : 455,235.71 = 90,253.81 : x
  2. Step 2: Convert to fraction form
    303,543.33/455,235.71 = 90,253.81/x
  3. Step 3: Cross multiply
    303,543.33x = 455,235.71 × 90,253.81
  4. Step 4: Simplify right side
    303,543.33x = 41,086,757,393.33
  5. Step 5: Solve for x
    x = 41,086,757,393.33/303,543.33
  6. Step 6: Final answer
    x = 135,357.14

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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.